Features Sound-Activated Control: Activates in dark environments, providing 24-hour sound control when the photoresistor is wrapped in black, enhancing energy efficiency and convenience. Dual Light Control Function: This module features light control function, enabling sound control in bright environments, offering versatile usage options for various lighting applications. Versatile Application: Suitable for small power appliances such as solar lights, small alarms, and small motors, providing flexible functionality for a variety of devices. Sensitive Sound Sensing: Activates at sound levels of 20 decibels within 1 meter, ensuring reliable and efficient operation in response to environmental noise. Convenient 5-Piece Set: Includes 5 modules with a small, lightweight design for easy installation and portability, ensuring practicality and ease of use. 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