Features： 1、HIGH PERFORMANCE: Can realize high frequency and fast switching of the circuit, no noise, no sparks and no electromagnetic interference. 2、ADJUSTABLE RANGE: The delay time is adjustable every 1s from 0‑999s, 0.1s from 0‑99.9s, and 1 minute from 0‑999 minutes. 3、POWER OFF SAVE: After the power is turned off, the last set delay time will be saved, and there is no need to repeat the setting. 4、OPTOCOUPLER ISOLATION: Input and output use optocoupler isolation, anti interference, low power consumption, and ensure stability. 5、MULTIPLE USAGES: Commonly used to control motors, light bulbs, LED strips, DC motors, micro water pumps, solenoid valves, etc. Specification： Item Type: MOS Tube Control Board Material: PCB Upper Limit Current: 20A, more than 5A need to add heat sink Quiescent Current: 20MA Working Current: 50MA Operating Temperature: -40-85℃ Package List： 1 x MOS Tube Control Board