--- Control DC Motor (Two Directions) through Buttons on Remote Controller.

--- Licence-free Frequency on 433Mhz.

--- Self-learning Coding.

--- Two Working Modes: Self-locking and Latching.

--- Easy to Install and Configure.

--- Up to 80W Output Power Rate.

--- Up to 200 Meters Control Range.

--- Low Power Consumption.


· Electric Doors.

· Shutters, Garages.

· Electronic Curtain/Blinds.

· DC Motors, Actuators.

· Plant Maintenance.

· Valve Control.

· Pumping Station.

· Oil/gas Pipelines Control.


The product manual can be downloaded from the following link:


 For any technical questions regarding this item, please go to the forum at https://www.quark-elec.com/forum/ and ask us your question, it's regularly checked by our technical team and your question may already have been answered there.


Packing list

Quark-elec order number is QK-R021. In the package, you will receive:

1x QK-R021 12V module with enclosure.

1x Portable type remote controller.


Contact us in the first instance, if you need a wall-mounted or 24V module. Lead time may be significant.

Operation specifications



Frequency bands

Quad-band: 433MHz

433Mhz modulation mode


Typical transmitting range

35 meters (indoors); 200 meters (open air)

Operating temperature

-25°C to +80°C

Storage temperature

-40°C to +85°C

DC supply

12.0V(+/-10%); 24.0V(+/-5%)

Average supply current (typical quiescent)


Rated current on relay

10A12VDC or 10A24VDC

Rated voltage on relay

12V to 24V

Power rate on relay


Remote controller battery voltage DC12V

Remote controller working current