Adopts built-in 1527 working chip, fully compatible with receiving modules using common learning code (1527) chips such as PT1527, EV1527, etc. Compatible with most 1527 remote control relay receiver modules. If the remote control is lost, purchase a new one and pair it with the receiver. Utilizes radio frequency technology and stable circuit design for high accuracy and efficiency, featuring an individualized and user-friendly design that offers added convenience. Strong RF signal with high sensitivity and omnidirectional performance; allows you to turn the receiver on or off using the 433MHz remote control (transmitter) from any location within a reliable range of up to 150 meters in open areas. The wireless RF signal can penetrate walls, floors, and doors. Easy to install and use; the 4-channel remote control system enables control over various devices in your home, garage, or car. Wide application: Can be connected to electronic control locks, lights, fans, windows, curtains, motors, cars, lifting equipment, motor controllers, lifters, or other DC12V appliances. Enables remote functions such as unlocking doors, turning off lights, or opening and closing curtains. Operation: Press and hold button "A" to turn on the relay; release the button to turn it off. Same function applies to other buttons. Support APP: No Channel: 4 Wireless Communication: RF Working Voltage: 9-12V Working Current: ≤30mA Operating RF Frequency: 433MHz Transmit Power: 15mW Wireless Operating Distance: 150m (Free Space) Frequency Deviation: 0.2MHz Transmission Rate: 50 - 60KHz Coded System: 1527 Learning Code Oscillation Resistance: 340k Applications: Lighting, electric doors, automated curtains, curtain control, garage door control, projection curtain control Instructions: Seven operating modes: inching, self-locking, interlocking, 2-way inching + 2-way self-locking, 2-way inching + 2-way interlocking, 2-way self-locking + 2-way interlocking, 2-way interlocking + 2-way interlock. This is a versatile remote control switch offering comprehensive functionality. Note: After reset, all paired remote controls will no longer work. Color: White Material: Plastic Package Contents: 1 x Remote Control 1 x Receiver Note: Only the items listed above are included; other products are not included. Light reflection and differences in display screens may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement error allowed is +/- 1-3cm.