Function: 1 Sound control is active in dark environments and can be wrapped in black for 24 hours of sound control. 2. This acoustic control switch module also has a light control function, and the photoresistor allows for acoustic control in curved environments. 3 Flexible for small power devices such as solar lights, small alarms, and small motors. 4 Sound control switch module with sensitive sound sensing function can be operated with 20 decibels within 1 meter. 5 With 5 modules, the lightweight and small size makes it much more convenient to install and carry. Specifications: Item Type: Sound Control Switch Module Product Material: Glass Fiber Model: S330 Input Voltage: DC 3V - 30V (Do not use batteries) Output Voltage: DC 3V - 30V (amount of input voltage, the amount of output voltage) Output Power: The amount of light (W) cannot exceed the input voltage (V) and the current cannot exceed 1A. Decibel Activation: 20 decibels (within 1 meter) On/Off Delay Time: 45 seconds fixed (Non-adjustable) Package List: 5 x Sound Control Switch Module