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 learning is successful. (Press the learning button a specific number of times depending on the desired working mode.) Clearing: Press and hold the learning button for about 8 seconds. The indicator flashes several times and then turns off. Press any remote button; if the relay does not respond, the code has been cleared successfully. About Receiver: Model No.: -C211008 1. Working voltage: DC12V–36V 2. Quiescent current: Less than 6mA 3. Working temperature: -40°C to +80°C 4. Receiver sensitivity: Better than -105dBm 5. Working frequency: 433MHz 6. Max load current: 10A About Working Modes: Working mode is set by pressing the learning button. Momentary: Press the learning button 1 time. Relay activates when button is pressed, turns off when released. Toggle: Press the learning button 2 times. Press button to turn relay on; press the same button again to turn off. Latched: Press the learning button 3 times. Press one button to turn relay on; press another button to turn 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: DC6V 3. Operating frequency: 433MHz 4. Remote distance: 50–100 meters 5. Operating current: 12mAh 6. Encoding: EV1527 code Remote quantity: 1 piece Color: White and Black Material: Plastic and Metal Package Contents: 1 x Remote Control Switch Receiver 1 x Remote Control Switch Transmitter Only the above items are included; other products are not included. Note: Light reflection and differences in display screens may cause slight variations in color between the item and the image. Measurement error is allowed within +/- 1–3 cm.