QIACHIP KR2202 Instruction Manual AC 110V 220V 433MHz RF Remote Control Switch 2-CH Relay Receiver

Version: V1.0

Last Updated: 2025-05-27

Model: KR2202

Product Size

Receiver Length (L) x Width (W) x Height (H): 68mm x 48mm x 20mm
Housing Length (L) x Width (W) x Height (H): 75mm x 54mm x 25mm
Receiver hole horizontal spacing: 60mm; Vertical spacing: 42mm; Hole Diameter: Ø5mm

Component Description

1: Learning button
2: Indicator light
3: Antenna

L: Live wire
N: Neutral wire
NO: Normally open terminal
COM: Common terminal
NC: Normally closed terminal

Wiring Diagram

Disconnect power before wiring.

Figure 1

Figure 1: Wiring diagram for AC motors

Load: AC Motor
Input Power: AC 85V-250V

Figure 2

Figure 2: Wiring diagram for DC motors

Load: DC motor
Input power: AC 85V-250V
External power supply: DC Power

Figure 3

Figure 3: Wiring diagram for lamps

Load: lamp
Input power: AC 85V-250V

Function description and setting method

(1) Momentary mode; (2) Toggle mode; (3) Latching mode; (4) Reset function.

NOTE

When you use the first and second working modes, a remote control with at least two buttons is required.
When you use the third working mode, a remote control with at least three buttons is required.
When pairing a second remote, you don't need to press the button on the receiver 8 times again to reset it.
Once the receiver and transmitter are paired and a working mode is selected, the receiver will retain this mode even if powered off and on again.
The following working modes require the use of QIACHIP brand remote controls (transmitters) and controllers (receivers/wireless remote control switches). Compatibility with other brands is not guaranteed.

(1) Momentary mode

In this mode:

Press and hold the remote control button (such as A), and the corresponding relay on the receiver will turn on.
Release the remote control button (such as A), and the corresponding relay on the receiver will turn off.

How to set momentary mode

NOTE

The KR2202 can only be properly set up after being successfully paired with two different buttons on the remote control.

Step 1

Click the learning button of the receiver once. The indicator light on the receiver will turn off, and the receiver will enter the setting state.

Step 2

Press the button on the remote control (such as A) once. The indicator light on the receiver will flash and then will turn off.

Step 3

After the indicator light goes out, press another button (such as B) on the same remote control. The indicator light on the receiver will flash and then will turn on. The momentary mode will be set successfully.

(2) Toggle mode

In this mode:

Press the remote control button (such as A), and the corresponding relay on the receiver will turn on.
Press the remote control button (such as A) again, and the corresponding relay on the receiver will turn off.

How to set toggle mode

NOTE

The KR2202 can only be properly set up after being successfully paired with two different buttons on the remote control.

Step 1

Click the learning button of the receiver twice. The indicator light on the receiver will turn off, and the receiver will enter the setting state.

Step 2

Press the button on the remote control (such as A) once. The indicator light on the receiver will flash and then will turn off.

Step 3

After the indicator light goes out, press another button (such as B) on the same remote control. The indicator light on the receiver will flash and then will turn on. The toggle mode will be set successfully.

(3) Latching mode

In this mode:

Press the remote control button (such as A), and the corresponding relay A on the receiver will turn on.
Press the remote control button (such as B), and relay B on the receiver will turn on while relay A on the receiver will turn off.
Press the remote control button (such as C), and the currently activated relay on the receiver will turn off.

How to set latching mode

NOTE

The KR2202 can only be properly set up after being successfully paired with two different buttons on the remote control.

Step 1

Click the learning button of the receiver three times. The indicator light on the receiver will turn off, and the receiver will enter the setting state.

Step 2

Press the button on the remote control (such as A) once. The indicator light on the receiver will flash and then will turn off.

Step 3

After the indicator light goes out, press another button (such as B) on the same remote control. The indicator light on the receiver will flash and then will turn on. The latching mode will be set successfully.

(4) Reset function

When the KR2202 receiver is reset, all paired transmitters will be unpaired and will no longer be able to control the receiver.

How to reset

Click the learning button on the receiver 8 times. The indicator light will flash and then will turn on. The reset will be complete.

Electrical characteristics

Parameter	Value
Input voltage	AC 85V-250V
RF frequency	433.92MHz
Standby current	8.5 mA
Rated Load	Max 1100W
Receiver sensitivity	-108dBm
Operation mode	Momentary mode/Toggle mode/Latching mode
Working temperature	-10℃~70℃
Size	68x48x18mm

Warning

L and N wires must not be reversed.
When using wireless electronic devices, avoid proximity to metal objects, large electronic equipment, electromagnetic fields, and other sources of strong interference.

Frequently Asked Questions（Q&A）

Question 1: Why can my remote control Relay 1 but not Relay 2?

Answer:

The most common reason is that Relay 2 has not been paired with a remote button yet.

KR2202 has two relay channels. Pairing one button only sets one relay channel. To control Relay 2, you need to pair another remote button in the same learning flow.

For Momentary mode:

Press the Learning button 1 time.
Press the button for Relay 1 and wait until the indicator light flashes and turns off.
Press the button for Relay 2 and wait until the indicator light flashes and turns on.

If only Relay 1 works, reset the receiver and pair both buttons again.

Question 2: Why do both A and B buttons control Relay 1 only after KR2202 Momentary pairing?

Answer:

This is usually a pairing issue, not a defective receiver.

Re-pair the receiver with the steps below to fix it:

Press the Learning button 8 times to reset.
Press the Learning button 1 time for Momentary mode.
Press button A and wait until the indicator light flashes and turns off.
Press button B and wait until the indicator light flashes and turns on.

Do not stop after pairing only button A. KR2202 needs both buttons to finish the 2-channel setup.

Question 3: What is the difference between Momentary, Toggle, and Latching mode?

Answer:

KR2202 has three working modes, and each mode changes how the relay responds to the remote button.

Momentary mode: the relay turns on only while you hold the button. When you release the button, the relay turns off.
Toggle mode: press the same button once to turn the relay on, and press it again to turn the relay off.
Latching mode: one button turns one relay on, another button turns the other relay on and turns the first relay off, and a stop button turns the active relay off.

Use Momentary mode for hold-to-run control, Toggle mode for simple on / off control, and Latching mode when two directions should not turn on at the same time.

Question 4: Do the two relay channels trigger at the same time or one by one?

Answer:

No, KR2202 does not have an automatic sequence mode.

The two relay channels are normally controlled separately by different remote buttons. In Momentary mode or Toggle mode, button A can control Relay 1 and button B can control Relay 2.

Question 5: How do I set two remotes to control Relay 1 and Relay 2 on KR2202?

Answer:

To set two remotes to control Relay 1 and Relay 2, pair one button from the first remote to Relay 1 and one button from the second remote to Relay 2 in the same learning flow.

Example for Toggle mode:

Press the Learning button on the receiver 2 times.
Wait until the indicator light turns off.
Press the button on the first remote for Relay 1.
Wait until the indicator light flashes and turns off.
Press the button on the second remote for Relay 2.
When the indicator light flashes and turns on, the setup is finished.

If the pairing is wrong, press the Learning button 8 times to reset. Reset will delete all paired remotes.

Question 6: 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 both buttons in the Momentary learning flow. Do not pair only button A.

Do not press the Learning button 8 times unless you want to reset the receiver, because 8 presses delete all paired remotes.

Question 7: Why does a 3-button UP / STOP / DOWN remote not work for motor control in Toggle mode?

Answer:

It fails because Toggle mode is not the right mode for UP / STOP / DOWN motor control. Use Latching mode instead.

The key step is pairing UP and DOWN in the same Latching mode learning flow:

Reset the receiver if the old pairing is wrong.
Press the Learning button 3 times to enter Latching mode.
Press UP first, then wait until the indicator light flashes and turns off.
Press DOWN next, then wait until the indicator light flashes and turns on.

After this setup, UP runs the motor up, DOWN runs the motor down and turns UP off, and STOP turns the active relay off. For motor control, make sure the up and down directions cannot turn on at the same time.

Question 8: How do I use KR2202 Momentary mode to control a two-direction motor with button A and button B?

Answer:

Yes. You can use KR2202 Momentary mode for a two-direction motor with button A and button B.

Steps:

Press the Learning button on the receiver 1 time.
Wait until the indicator light turns off.
Press button A on the remote.
Wait until the indicator light flashes and turns off.
Press button B on the remote.
When the indicator light flashes and turns on, the setup is finished.

In Momentary mode, the relay turns on only while you hold the button. For a two-direction motor, both directions must not turn on at the same time.

If the motor system has a dedicated control input, trigger the control input with KR2202 instead of switching the motor power wires directly.

Question 9: 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. But the relay state 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. But the relay contacts do not output 220V by themselves.

The relay output is a dry contact. The NO / COM / NC terminals work like a switch for the circuit you connect.

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 wiring diagram that matches your load, such as a motor, lamp, or other device. Turn off power before wiring. For AC power wiring, do not reverse L and N, and keep the load within Max 1100W.

L and N power the KR2202 receiver itself. The relay terminals do not output power by themselves; they are dry contacts and work like switches for the load circuit you connect.

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 normal garage door opener or controller input, yes. KR2202 can work like a dry contact switch signal, similar to pressing a wall button.

Do not use KR2202 to directly drive bare garage door motors. KR2202 is a relay receiver, not a garage door motor controller.

Question 14: Can KR2202 control a winch raise and lower motor?

Answer:

Yes, for some winch raise / lower systems, but only if the winch motor matches KR2202.

Check the motor voltage, running current, and starting current first. KR2202 input is AC 85V-250V, and the rated load is Max 1100W. For raise / lower control, the up and down directions must not turn on at the same time.

Question 15: Is KR2202 suitable for a roller shutter or garage shutter motor?

Answer:

Yes, KR2202 can be used for some roller shutter or garage shutter motors.

Key points:

The shutter motor or controller must match KR2202 power and load limits: AC 85V-250V input and Max 1100W load.
Momentary mode is usually a good choice because the motor runs only while you hold the remote button.
If the shutter has a manual wall switch, connect KR2202 relay output COM and NO in parallel with the two terminals of the manual switch to add remote control.

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 if you want the command to work only while you hold the button. Do not connect KR2202 to terminals that are not made for dry contact input.

Question 17: How do I identify a 3-wire roller shutter motor, and does KR2202 stop at the end position?

Answer:

No, do not assume the third wire is ground. Also, KR2202 does not stop the shutter at the end position by itself.

A 3-wire shutter motor may be Live / Neutral / Ground, or it may be Common / Up / Down. Check the motor label, wiring diagram, or controller manual before wiring. KR2202 only turns the relay on and off; the shutter motor or controller must have its own limit switch or end stop.

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 when you connect the pool cover motor, KR2202 is probably not the broken part. The problem is usually the motor load or the motor control method.

The two most likely reasons are:

The motor starting current is too high. A motor needs much more current when it starts than when it is running. Even if the motor running power is under Max 1100W, the starting current may still be too high for KR2202. In this case, do not use KR2202 to switch the motor power directly. Use a proper motor controller or contactor, or confirm that the starting current is within the KR2202 limit.
The pool cover motor may need its own control input. KR2202 is a relay receiver, not a motor controller. It only works like a switch through NO and COM. If the pool cover system has a wall switch or control input, use KR2202 to trigger that input instead of directly switching the motor power wires.

Check the motor label or controller manual for starting current and control input type. If you are not sure, ask an electrician to check it 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 KR2202 receivers are close to each other.

One remote sends the same RF signal. If both receivers are within range, both may receive the signal and operate. To avoid interference, keep the two receivers far enough apart so they are not in the same remote-control range, 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 KR2202.

KR2202 uses 433.92MHz remote control. To improve distance, fully extend the receiver antenna and keep it away from metal and motors. If you need about 100 meters, use a longer-range remote with an antenna instead of modifying the receiver.