Features Sound Control in Dark Environment: Activates in low light conditions, offe 24-hour sound control by cove the photoresistor in black for enhanced functionality. Dual Functionality: Combines sound control with light control, allowing for flexible use in both dark and bright environments, enhancing practicality and usability. Versatile Application: Suitable for small power appliances, including solar lights, alarms, and small motors, providing a wide range of potential uses. Sensitive Sound Sensing: Activates at 20 decibels within 1 meter, ensu reliable and precise sound control for various applications. Convenient Installation and Portability: Set of 5 lightweight modules, compact in size, facilitating easy installation and transportation for added convenience. Specification: Item Type: Sound Control Switch Module Product Material: Glass Fiber Model: S330 Input Voltage: DC 3V-30V (do not use dry batteries) Output Voltage: DC 3V-30V (how much voltage input is input, how much is the output voltage) Output Power: The output power of light (W) can not exceed the input voltage (V), and the current cannot exceed 1A. Activating Decibel: 20 Decibels (within 1 meter) Turn On/Off Delay Time: Fixed 45 seconds. (not adjustable) Package List: 5 x Sound Control Switch Module Package List 5 x Sound Control Switch Module