Product FAQ
KR2202
Question 01. Why can my remote control Relay 1 but not Relay 2 in KR2202 Momentary mode?
Answer:
Your pairing steps may be wrong, so your remote can only control Relay 1.
Pair the receiver again with the steps below:
- Press the receiver's Learning button 8 times to reset the receiver.
- Press the receiver's Learning button 1 time for Momentary mode.
- Press one button on the remote (such as A). Wait until the receiver's indicator light flashes, then turns off.
- Press another button on the remote (such as B). Wait until the receiver's indicator light flashes, then turns on.
This sets both relays in Momentary mode.
Question 02. Why do button A and button B both control Relay 1 after KR2202 Momentary pairing?
Answer:
Your pairing steps may be wrong, so button A and button B both control Relay 1.
Pair the receiver again with the steps below:
- Press the receiver's Learning button 8 times to reset the receiver.
- Press the receiver's Learning button 1 time for Momentary mode.
- Press button A on the remote. Wait until the receiver's indicator light flashes, then turns off.
- Press button B on the remote. Wait until the receiver's indicator light flashes, then turns on.
This sets button A for Relay 1 and button B for Relay 2 in Momentary mode.
Question 03. What is the difference between KR2202 Momentary, Toggle, and Latching modes?
Answer:
KR2202 has three working modes.
Momentary mode: the relay turns on while you hold the remote button. The relay turns off when you release it.
Toggle mode: press the remote button once, and the relay turns on. Press the same remote button again, and the relay turns off.
Latching mode: press remote button A, and Relay 1 turns on. Press remote button B, and Relay 2 turns on while Relay 1 turns off. Press STOP, and the active relay turns off.
Use Momentary mode for hold-to-run control. Use Toggle mode for on / off control. Use Latching mode when two directions must not turn on at the same time.
Question 04. Can KR2202 trigger Relay 1 and Relay 2 one by one automatically?
Answer:
No, KR2202 does not have an automatic sequence mode.
Relay 1 and Relay 2 are controlled by paired remote buttons. In Momentary mode or Toggle mode, remote button A can control Relay 1, and remote button B can control Relay 2.
Question 05. How do I set two remotes to control Relay 1 and Relay 2 on KR2202?
Answer:
Pair one button on each remote in the same setup. The first button you pair controls Relay 1. The second button you pair controls Relay 2.
Example for Toggle mode:
- Press the receiver's Learning button 2 times for Toggle mode. Wait until the receiver's indicator light turns off.
- Press a button on the first remote. Wait until the receiver's indicator light flashes, then turns off.
- Press a button on the second remote. Wait until the receiver's indicator light flashes, then turns on.
Question 06. Can I pair multiple remotes to channels A and B in Momentary mode?
Answer:
Yes, KR2202 can pair multiple remotes to channels A and B in Momentary mode.
For each new remote, pair button A and button B in the same Momentary setup. Do not pair button A alone.
Press the receiver's Learning button 8 times only if you want to reset the receiver. Reset deletes all paired remotes.
Question 07. Why does my 3-button UP / STOP / DOWN remote not work for motor control in Toggle mode?
Answer:
Toggle mode is not the right mode for UP / STOP / DOWN motor control. Use Latching mode instead.
Pair UP and DOWN in the same Latching mode setup:
- Press the receiver's Learning button 8 times to reset the receiver.
- Press the receiver's Learning button 3 times for Latching mode.
- Press the UP button. Wait until the receiver's indicator light flashes, then turns off.
- Press the DOWN button. Wait until the receiver's indicator light flashes, then turns on.
After this setup:
UP: the motor runs up. DOWN: the motor runs down and UP turns off. STOP: the active relay turns off.
For motor control, the up and down directions must not turn on at the same time.
Question 08. How do I use KR2202 Momentary mode to control a two-direction motor with button A and button B?
Answer:
Use KR2202 Momentary mode through the motor controller control inputs, not by connecting KR2202 directly to the motor wires.
Pair the receiver with the steps below:
- Press the receiver's Learning button 1 time for Momentary mode. Wait until the receiver's indicator light turns off.
- Press remote button A for one motor direction. Wait until the receiver's indicator light flashes, then turns off.
- Press remote button B for the other motor direction. Wait until the receiver's indicator light flashes, then turns on.
Button A: one motor direction runs while you hold button A. Button B: the other motor direction runs while you hold button B.
The motor controller must prevent both directions from running at the same time.
Question 09. Does the KR2202 relay stay on after power loss?
Answer:
No, the relay cannot stay on when the power is off.
KR2202 can remember the paired remote and working mode after power loss. The relay state still needs power. After power comes back, the next relay action depends on the mode and remote command.
Question 10. Is the KR2202 receiver powered by 220V, or are the relay contacts rated for 220V?
Answer:
Yes, the KR2202 receiver can be powered by 220V AC. No, the relay contacts do not output 220V by themselves.
The relay output is a dry contact. This means the relay output works like a switch. It does not output power by itself.
Relay output terminals: NO / COM / NC.
Question 11. Is KR2202 compatible with 230V AC?
Answer:
Yes, KR2202 can work with 230V AC power.
Its input voltage range is AC 85V-250V, so 230V AC is within the supported power range.
Question 12. How should I wire KR2202 for my load?
Answer:
It depends on what load you want to control.
Use the KR2202 wiring diagram that matches your load. Turn off power before wiring.
L / N: receiver power input, AC 85V-250V.
Relay output terminals: NO / COM / NC.
Rated load: Max 1100W.
The relay output is a dry contact. This means the relay output works like a switch. It does not output power by itself.
Question 13. Can one KR2202 remote control two garage door motors?
Answer:
It depends on what you mean by garage door motor.
If you mean a garage door opener or motor controller with a compatible control input, yes. KR2202 can trigger that input.
Do not use KR2202 to drive bare garage door motors directly. KR2202 is a relay receiver, not a motor controller.
Question 14. Can KR2202 control a winch raise and lower motor?
Answer:
It depends on the winch control method.
If the winch controller has compatible raise and lower control inputs, KR2202 can trigger those inputs.
Connect KR2202 to the winch controller input or manual switch terminals.
Do not connect KR2202 directly to the winch motor wires.
Question 15. Is KR2202 suitable for a roller shutter or garage shutter motor?
Answer:
Yes, if the shutter motor or controller matches the KR2202 power and load limits.
Key points:
- KR2202 input voltage is AC 85V-250V.
- The load must stay within Max 1100W.
- If the shutter has a wall switch input, connect the KR2202 relay output to that input.
Question 16. Can KR2202 use button A and button B for gate open and close in Momentary mode?
Answer:
Yes, if your gate controller has dry contact OPEN and CLOSE inputs.
Use Relay 1 for OPEN and Relay 2 for CLOSE. Set KR2202 to Momentary mode.
Connect KR2202 only to the gate controller dry contact input terminals.
Question 17. How do I identify a 3-wire roller shutter motor? Does KR2202 stop at the end position?
Answer:
For the 3-wire motor: check the motor label or manual before wiring.
A 3-wire shutter motor may be Live / Neutral / Ground, or it may be Common / Up / Down.
For the end position: no. KR2202 does not stop the shutter at the end position by itself.
KR2202 only turns its relay on and off.
Question 18. Why does KR2202 work with no load but fail when I connect a pool cover motor?
Answer:
If KR2202 works with no load but fails with a pool cover motor, the cause is more likely the motor load or motor control method.
The two most likely reasons are:
-
The motor starting current is too high. A motor needs more current when it starts than when it runs. Even if the running power is under Max 1100W, the starting current may still be too high for KR2202. Do not connect KR2202 directly to the pool cover motor wires. Use a motor controller or contactor for the motor circuit.
-
The pool cover controller may need its own control input. KR2202 is a relay receiver, not a motor controller. If the pool cover controller has a wall switch input or control input, connect KR2202 relay output COM and NO to that input.
Check the motor label or manual for starting current and control input type. If you are not sure, ask an electrician before wiring.
Question 19. Can one remote control two KR2202 receivers in Momentary mode and Toggle mode?
Answer:
Yes, it is possible, but we do not recommend it if the two receivers are close to each other.
One remote sends the same RF signal. If both receivers are within the same remote-control range, both may receive the signal and operate.
Momentary mode and Toggle mode do not separate the RF signal. To avoid interference, keep the two receivers far enough apart, or use separate remotes.
Question 20. Can I add a signal amplifier to KR2202 to reach 100 meters?
Answer:
No, we do not recommend adding a signal amplifier to the receiver.
Changing the receiver may damage KR2202 or make the remote signal unstable.
To improve remote-control range, fully extend the receiver antenna. Keep the receiver antenna away from metal parts and motor wires.
If you need about 100 meters, use a longer-range remote with an antenna.
KR2402A
Question 01. Why can my remote control Relay 1 but not Relay 2 in KR2402A Momentary mode?
Answer:
Your pairing steps may be wrong, so your remote can only control Relay 1.
Pair the receiver again with the steps below:
- Press the receiver's Learning button 8 times to reset the receiver.
- Press the receiver's Learning button 1 time for Momentary mode.
- Press one button on the remote (such as A). Wait until the receiver's indicator light flashes, then turns off.
- Press another button on the remote (such as B). Wait until the receiver's indicator light flashes, then turns on.
This sets both relays in Momentary mode.
Question 02. Why do button A and button B both control Relay 1 after KR2402A Momentary pairing?
Answer:
Your pairing steps may be wrong, so button A and button B both control Relay 1.
Pair the receiver again with the steps below:
- Press the receiver's Learning button 8 times to reset the receiver.
- Press the receiver's Learning button 1 time for Momentary mode.
- Press button A on the remote. Wait until the receiver's indicator light flashes, then turns off.
- Press button B on the remote. Wait until the receiver's indicator light flashes, then turns on.
This sets button A for Relay 1 and button B for Relay 2 in Momentary mode.
Question 03. What is the difference between KR2402A Momentary, Toggle, and Latching modes?
Answer:
KR2402A has three working modes.
Momentary mode: the relay turns on while you hold the remote button. The relay turns off when you release it.
Toggle mode: press the remote button once, and the relay turns on. Press the same remote button again, and the relay turns off.
Latching mode: press remote button A, and Relay 1 turns on. Press remote button B, and Relay 2 turns on while Relay 1 turns off.
Use Momentary mode for hold-to-run control. Use Toggle mode for on / off control. Use Latching mode when Relay 1 and Relay 2 must not stay on at the same time.
Question 04. Can KR2402A trigger Relay 1 and Relay 2 one by one automatically?
Answer:
No, KR2402A does not have an automatic sequence mode.
Relay 1 and Relay 2 are controlled by paired remote buttons. In Momentary mode or Toggle mode, remote button A can control Relay 1, and remote button B can control Relay 2.
Question 05. How do I set two remotes to control Relay 1 and Relay 2 on KR2402A?
Answer:
Pair one button on each remote in the same setup. The first button you pair controls Relay 1. The second button you pair controls Relay 2.
Example for Toggle mode:
- Press the receiver's Learning button 2 times for Toggle mode. Wait until the receiver's indicator light turns off.
- Press a button on the first remote. Wait until the receiver's indicator light flashes, then turns off.
- Press a button on the second remote. Wait until the receiver's indicator light flashes, then turns on.
Question 06. Can I pair multiple remotes to channels A and B in Momentary mode?
Answer:
Yes, KR2402A can pair multiple remotes to channels A and B in Momentary mode.
For each new remote, pair button A and button B in the same Momentary setup. Do not pair button A alone.
Press the receiver's Learning button 8 times only if you want to reset the receiver. Reset deletes all paired remotes.
Question 07. How do I use KR2402A Momentary mode to control a two-direction motor with button A and button B?
Answer:
Use KR2402A Momentary mode through the motor controller control inputs, not through the motor power wires.
Pair the receiver with the steps below:
- Press the receiver's Learning button 1 time for Momentary mode. Wait until the receiver's indicator light turns off.
- Press remote button A for one motor direction. Wait until the receiver's indicator light flashes, then turns off.
- Press remote button B for the other motor direction. Wait until the receiver's indicator light flashes, then turns on.
Button A: one motor direction runs while you hold button A. Button B: the other motor direction runs while you hold button B.
The motor controller must prevent both directions from running at the same time.
Question 08. Does the KR2402A relay stay on after power loss?
Answer:
No, the relay cannot stay on when the power is off.
KR2402A can remember the paired remote and working mode after power loss. The relay state still needs power. After power comes back, the next relay action depends on the mode and remote command.
Question 09. How should I wire KR2402A for my load?
Answer:
It depends on what load you want to control.
Use the KR2402A wiring diagram that matches your load. Turn off power before wiring.
+V / -V: receiver power input, DC 5V-60V.
Relay 1 output terminals: NO1 / COM1 / NC1. Relay 2 output terminals: NO2 / COM2 / NC2.
The relay output is a dry contact. This means the relay output works like a switch. It does not output power by itself.
Question 10. Can one remote control two KR2402A receivers in Momentary mode and Toggle mode?
Answer:
Yes, it is possible, but we do not recommend it if the two receivers are close to each other.
One remote sends the same RF signal. If both receivers are within the same remote-control range, both may receive the signal and operate.
Momentary mode and Toggle mode do not separate the RF signal. To avoid interference, keep the two receivers far enough apart, or use separate remotes.
Question 11. Can I add a signal amplifier to KR2402A to reach 100 meters?
Answer:
No, we do not recommend adding a signal amplifier to the receiver.
Changing the receiver may damage KR2402A or make the remote signal unstable.
To improve remote-control range, fully extend the receiver antenna. Keep the receiver antenna away from metal parts and motor wires.
If you need about 100 meters, use a longer-range remote with an antenna.
KR1201A
Question 01. Does KR1201A support Momentary mode?
Answer:
Yes, KR1201A supports Momentary mode.
Momentary mode: the relay turns on while you hold the remote button. The relay turns off when you release it.
KR1201A also supports Toggle mode, Latching mode, and Delay mode.
Question 02. In Momentary mode, what happens if the remote moves out of range while I hold the button?
Answer:
If the remote moves out of range, the relay turns off.
The receiver no longer gets the remote signal. This is the same as releasing the remote button.
Question 03. Which mode should I use to reduce battery consumption?
Answer:
Momentary mode may help reduce battery use.
The receiver still uses a small amount of power in standby. Momentary mode can reduce the active working time.
For longer operating time, use a large-capacity battery or a stable 12V DC power supply.
Question 04. Will KR1201A lose the paired remotes or working mode after power loss?
Answer:
No, KR1201A can remember the paired remotes and working mode after power loss.
The relay cannot stay on when the power is off.
After power comes back, the receiver works with the saved remotes and mode. Reset deletes the saved data.
Question 05. Does Toggle mode need to be set again after power loss?
Answer:
No, KR1201A does not need to be set again after power loss.
The receiver can remember Toggle mode after power loss.
Question 06. Can one KR1201A receiver work with more than one remote?
Answer:
Yes, one KR1201A receiver can work with multiple remotes.
Pair the first remote. Then pair each new remote the same way.
Each paired remote can control the same receiver.
Question 07. Can two remotes use the same working mode, such as Delay mode or Toggle mode?
Answer:
Yes, multiple remotes can use the same working mode.
Pair the remotes to the same receiver and set the working mode you need.
Question 08. Can KR1201A reverse a DC motor?
Answer:
No, KR1201A cannot reverse a DC motor.
KR1201A is a single-channel relay receiver. It can do simple on / off control.
DC motor reverse control needs polarity change. Use a two-channel relay receiver or a motor controller.
Question 09. Can button B reverse a motor?
Answer:
No, button B cannot reverse a motor with KR1201A.
KR1201A is a single-channel relay receiver. It cannot do forward and reverse motor control.
Use a two-channel controller for motor forward and reverse control.
Question 10. Can KR1201A control a servo motor?
Answer:
No, KR1201A is not made for servo motor control.
Servo motors need a signal-based servo controller.
Question 11. Can two KR1201A receivers control a DC motor left and right?
Answer:
No, two KR1201A receivers are not the right choice for DC motor left and right control.
DC motor direction control needs polarity change. Use a two-channel receiver or a motor controller.
Question 12. Can KR1201A be powered by AC power?
Answer:
No, do not power KR1201A with AC power.
KR1201A needs DC 12V input. If you need AC 110V or AC 220V control, choose a receiver made for that AC voltage.
Question 13. Can KR1201A control AC 220V home appliances?
Answer:
No, KR1201A is not the right choice for AC 220V home appliances.
KR1201A itself is a 12V DC receiver. Do not power it with AC 220V.
Use an AC 220V receiver instead. For example: KR2201 series.
Question 14. Can KR1201A and the load use the same power supply?
Answer:
Yes, but only if the voltage and current match both the receiver and the load.
Check that:
- receiver input voltage: DC 12V;
- load voltage;
- power supply output current.
Wrong voltage or not enough current can damage the device.
Question 15. Can a 5V version work with a 3.7V Li-ion / 18650 battery?
Answer:
No, a 3.7V battery is lower than the 5V receiver input.
Low voltage may make the receiver unstable, reduce range, or stop the receiver from working.
Use a proper 5V power source for a 5V receiver.
Question 16. What battery should I use for KR1201A?
Answer:
Use a 12V power source for KR1201A.
A 12V lithium battery is usually better than AA batteries.
AA batteries may work, but they have lower capacity and may run out fast. If the device stops working, check the battery first.
Question 17. Can a 9V battery power KR1201A?
Answer:
No, a 9V battery is not enough for KR1201A.
KR1201A needs 12V DC. A 9V battery may light the indicator, but it may not power the relay.
Use a proper 12V power source.
Question 18. Can two devices be connected using NO and NC?
Answer:
Yes, you can use NO and NC to connect two loads.
NO: normally open. NC: normally closed.
Connect one load through NO and another load through NC. When the relay changes, one load turns on and the other turns off.
Avoid short circuits.
Question 19. Can the negative line be connected to COM?
Answer:
Yes, the negative line can connect to COM in some DC circuits.
Only do this if you understand relay wiring.
The key rule: the circuit must not create a short circuit.
Question 20. Can KR1201A control two LED lights so that one is on while the other is off?
Answer:
Yes, KR1201A can control two LED lights so that one is on while the other is off.
Connect one LED through NO and the other LED through NC. When the relay changes, one LED turns on and the other turns off.
For more complex control, use a multi-channel relay receiver.
Question 21. What is the maximum remote-control distance?
Answer:
It depends on the remote model, antenna, environment, and interference.
Some remotes claim 2 miles or 3 km. Real-world distance is much lower, around 1 km or less.
Question 22. Can I connect an external antenna to KR1201A?
Answer:
Yes, but the external antenna must match the module specs.
KR1201A has an antenna on the module. A wrong antenna may not improve distance and may make the module work poorly.
Question 23. How do I reset KR1201A?
Answer:
Press the receiver's Learning button 8 times to reset the receiver.
Reset deletes all paired remotes and mode settings. Pair the remotes and set the mode again.
Question 24. Does KR1201A have memory storage, such as EEPROM?
Answer:
Yes, KR1201A has memory for paired remotes and mode settings.
The module can store up to 20 remotes.
Question 25. Can KR1201A be used for access control or automatic residential gates?
Answer:
It depends on the gate controller input and voltage.
For access-control systems with a dry contact input, KR1201A can trigger that input.
For automatic residential gates, use a receiver that matches the gate controller voltage and control input.
If the access-control system or the gate controller has a manual switch or button, connect KR1201A relay output COM and NO in parallel with that switch.
This makes the manual switch work by remote control.
KR1202-V05
Question 01. Why does only one of the two KR1202-V05 channels work?
Answer:
Your pairing steps may be wrong, so the receiver may learn only one channel.
Pair both channels again in the same Momentary setup:
- Press the receiver's Learning button 8 times to reset the receiver.
- Press the receiver's Learning button 1 time for Momentary mode. Wait until the receiver's indicator light turns off.
- Press one button on the remote (such as A). Wait until the receiver's indicator light flashes, then turns off.
- Press another button on the remote (such as B). Wait until the receiver's indicator light flashes, then turns on.
This pairs both channels in Momentary mode.
Question 02. Why does button A on one remote work in reverse from the other remotes?
Answer:
That transmitter may have been paired with a different button order.
Reset the receiver once. Then pair all transmitters again with the same button order. Example for Momentary mode:
- Press the receiver's Learning button 8 times to reset the receiver.
- Press the receiver's Learning button 1 time for Momentary mode. Wait until the receiver's indicator light turns off.
- Press button A on transmitter 1 first. Wait until the receiver's indicator light flashes, then turns off.
- Press button B on transmitter 1 second. Wait until the receiver's indicator light flashes, then turns on.
- Repeat the same A/B button order for each transmitter.
This pairs each transmitter with the same A/B button order.
Question 03. Why does my motor go up but not down after KR1202-V05 worked normally for one week?
Answer:
If the motor worked normally before but now goes up and not down, the first thing to check is loose wiring.
The likely causes are:
-
One motor output wire may have become loose. Check the wires on M1 and M2, especially the wire for the failed direction.
-
The remote battery may be weak. One button signal may still work, but the other button signal may be too weak. Replace the remote battery. Then pair the remote and receiver again.
If the wiring is tight, the battery is new, and pairing again does not fix it, the receiver may have a fault. In that case, apply for a return or replacement.
Question 04. How do I pair all 4 transmitters for my theft alarm if only 1 transmitter works now?
Answer:
This is usually because the receiver was reset before each new transmitter was paired.
Do not press the receiver's Learning button 8 times before pairing each new transmitter.
Reset deletes all paired transmitters. If you reset before pairing the next transmitter, only the last transmitter may work.
Pair the 4 transmitters again with the steps below:
- Press the receiver's Learning button 8 times to reset the receiver once.
- Press the receiver's Learning button 1 time for Momentary mode. Wait until the receiver's indicator light turns off.
- Press the first remote button on transmitter 1. Wait until the receiver's indicator light flashes, then turns off.
- Press the second remote button on transmitter 1. Wait until the receiver's indicator light flashes, then turns on.
- Repeat the same button order for transmitter 2, transmitter 3, and transmitter 4.
Use QIACHIP brand transmitters for this setup. Other-brand transmitter compatibility is not guaranteed.
Question 05. Why does my gate open and close by itself without pressing the remote? Is it interference?
Answer:
Yes, it may be interference from a nearby same-frequency signal.
If the receiver learned that interference signal during pairing, that signal may control the receiver. Then the receiver may open or close the gate without pressing your remote.
Pair the remote and receiver again in a place with no signal interference:
- Move the receiver away from the gate and nearby interference sources.
- Pair your remote and receiver again.
- Connect the receiver to the gate equipment again.
- Test the gate with your remote.
If the gate location always has same-frequency interference, we do not recommend this 433.92MHz wireless controller. Use a different-frequency controller to avoid signal interference.
KR1202-30R
Question 01. My 3-button remote opens my gate with every button, but no button closes it. My second remote opens and closes fine. How do I fix the first remote?
Answer:
Your buttons may all be set to the same direction, so they all open the gate and none closes it.
Your second remote opens and closes fine. This shows the receiver, wiring, and motor are all working. The problem is only how that first remote is paired.
Your remote has 3 buttons, so use Latching mode. Latching mode gives you one button to open, one button to close, and one button to stop.
Reset deletes all paired remotes, so you pair both remotes again after the reset.
Pair each remote with three buttons in the same Latching setup:
- Press the receiver's Learning button 8 times to reset the receiver. The indicator light flashes, then turns off.
- Press the receiver's Learning button 3 times for Latching mode. The indicator light turns on.
- Press one button on the remote (such as A). Wait until the indicator light flashes, then turns on. This button opens the gate.
- Press a second button (such as B). Wait until the indicator light flashes, then turns on. This button closes the gate.
- Press a third button (such as C). Wait until the indicator light flashes, then turns off. This button stops the gate.
- Repeat steps 2-5 for your second remote.
Use QIACHIP brand remotes for this setup. Other-brand remote compatibility is not guaranteed.
If this remote still cannot close the gate after you pair all three buttons again, the remote itself may be faulty.