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 light flashes several times and then turns off. Press a button on the remote; if the relay does not respond, the code has been cleared successfully. About Receiver: Model No.: AK-C211008 1. Working voltage: DC 12V–36V 2. Quiescent current: Less than 6mA 3. Working temperature: -40°C to +80°C 4. Receiver sensitivity: Greater than -105dBm 5. Working frequency: 433MHz 6. Maximum load current: 10A Working Modes: - Momentary: Press the learning button once. Relay action: Press and hold → On; Release → Off. - Toggle: Press the learning button twice. Relay action: Press → On; Press the same button again → Off. - Latched: Press the learning button three times. Relay action: Press → On; Press another button → 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: DC 6V 3. Operating frequency: 433MHz 4. Remote distance: 50–100 meters 5. Operating current: 12 mAh 6. Encoding: EV1527 code Remote Quantity: 2 pcs or 1 pc Color: White & Black Material: Plastic + Metal Package Contents: 1 x Remote Control Switch Receiver 2 x Remote Control Switch Transmitter / 1 x Remote Control Switch Receiver 1 x Remote Control Switch Transmitter Note: The package includes only the items listed above. Other products are not included. Note: Light reflection and differences in display screens may cause slight variations in the color of the item as shown in the picture compared to the actual item. Measurement error allowed is +/- 1–3 cm.