1、Photoresistor: With a photoresistor, the voice control is invalid if there is light in the environment, and it is effective in a dark environment. 2、24 Hour Controllable: Wrap the photoresistor with a black object to achieve 24 hour day and night control. 3、Input and Output Voltage: DC3V‑30V wide voltage range, solar energy can be used to make and use DIY sound control lights. 4、Application: Sound and light control switch control panel is suitable for solar lights, plug in DC corridor lights, garage lights and so on. 5、With Power Cord: The voice control module comes with power cords for output and input, no additional wiring is required. Item Type: Sound Control Light Circuit Board Material: PCB Open Decibel: 20 Decibels (Distance within 1 Meter) Turn on Delay and Turn Off Time: Fixed 45 Seconds. (Time is Not Adjustable) Light Control Function: The product is equipped with a photoresistor. The sound control is invalid in a light environment. It can be controlled in a dark environment. Wrap the photoresistor with black things to control 24 hours a day and night. 1 x Circuit Board 1 x English Manual