Operational Instructions: 1. Receiver: Press and hold the touch switch until it turns on, then press and hold the switch again to turn it off. Transmitter: Automatically turns on upon power-up. The touch switch can be used to turn the device on and off. 2. The device can be divided into 20 ID groups, with the transmitter and receiver in each group assigned the same ID. Up to 20 transmitters can be used simultaneously. 3. When the transmitter and receiver are connected, the signal indicator light will flash. (If it does not flash, the connection between the transmitter and receiver is unsuccessful.) 4. Receiver: Battery-powered: Charges for 3 hours. Use time: 20 hours. Applications: Stage lighting, large-scale theatrical performances, stadium lighting, temporary performances, urban lighting systems, television stations, conference centers, professional theaters, theme parks, dance halls, bars, small-scale theatrical performances, etc. Lifespan: 10 years Color: Black Material: ABS Package Contents: 1 * Transmitter 2 * Receiver