About Receiver: Model No.: C2110081. Working voltage: DC12V-36V. Quiescent current: Less than 6mA. Working temperature: -40°C to +80°C. Receiver sensitivity: More than -105dBm. Working frequency: 433MHz. Max load current: 10A. About Learning and Clearing: Learning: Press the learning button, the indicator flashes and turns off. Release the button, then press any button on the remote transmitter. The indicator flashes three times, indicating successful learning. The number of times the learning button is pressed determines the working mode. Clearing: Press and hold the learning button for about 8 seconds. The indicator flashes several times and turns off. Then press any button on the remote. If the relay does not respond, the code has been successfully cleared. Color: White + Orange + Black Material: PC + ABS Working Modes: Momentary: Press the learning button 1 time. Relay: Press and hold – On; Release – Off. Toggle: Press the learning button 2 times. Relay: Press – On; Press the same button again – Off. Latched: Press the learning button 3 times. Relay: Press – On; Press another button – Off. 2-Channel Momentary + 2-Channel Latched: Press the learning button 4 times. 2-Channel Momentary + 2-Channel Toggle: Press the learning button 5 times. 2-Channel Toggle + 2-Channel Latched: Press the learning button 6 times. About Transmitter: 1. Buttons: 4 2. Working Voltage: DC9V (battery not included) 3. Operating frequency: 433MHz 4. Remote Distance: 200-2000 meters 5. Operating Current: 13mAh Note: Due to different product batches, the appearance may vary slightly. This does not affect functionality. Package Contents: 1 x Wireless 4CH Remote Control Receiver 1 x Remote Control Transmitter 1 x Suction Cup Antenna Only the items listed above are included. Other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error is +/- 1-3cm.