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 according to the required 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 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 changed by pressing the learning button. Momentary: Press the learning button once. Relay activates when button is pressed, turns off when released. Toggle: Press the learning button twice. Press button to turn on, press the same button again to turn off. Latched: Press the learning button three times. Press one button to turn on, press another button to turn off. 2 Channel Momentary + 2 Channel Latched: Press the learning button four times. 2 Channel Momentary + 2 Channel Toggle: Press the learning button five times. 2 Channel Toggle + 2 Channel Latched: Press the learning button six 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 & Black Material: Plastic + 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 different display settings may cause slight color differences between the image and the actual item. Measurement error is +/- 1–3 cm.