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 then turns off. 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: DC 12V36V 2. Quiescent current: Less than 6mA 3. Working temperature: -40C to +80C 4. Receiver sensitivity: More 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 1 time. Relay: Press to turn on; release to turn off. - Toggle: Press the learning button 2 times. Relay: Press to turn on; press the same button again to turn off. - Latched: Press the learning button 3 times. Relay: Press to turn 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: DC 6V 3. Operating frequency: 433MHz 4. Remote distance: 50100 meters 5. Operating current: 12 mAh 6. Encoding: EV1527 code Remote Quantity: 1 piece Color: White & Black Material: Plastic + Metal Package Contents: 1 Remote Control Switch Receiver 1 Remote Control Switch Transmitter Only the items listed above are included; other products are not included. Note: Light reflection and differences in display screens may cause slight color variations between the image and the actual item. Measurement may vary by +/- 13 cm.