1. Working voltage:wide voltage 5 ~ 30V, two power supply interface 2. Operating mode: the initial state, module outputs: normally open (NO) and the common terminal (COM) is disconnected, normally closed (NC) and the common terminal (COM) connected. Providing a low pulse signal, or touch trigger key, relay and indicator lights, the output of the state: normally open (NO) and Common (COM) connected, normally closed (NC) and the common terminal (COM) is disconnected. After 0-24 seconds (this time can be adjusted according to your needs) relay off,back to the state before the trigger. 3.The length of timing adjustment by potentiometer, default 0-24 seconds. If you need more time, you can replace the larger capacitor (C2) or potentiometer. Delay time T = 1.1RC. 4. With a relay indicator. 5. The module can control: 10A / 250VAC, 10A / 30VDC load. 6. The relay has a freewheeling protection. 7. Dimensions: 5.4 * 1.9 * 1.8cm (L * W * H)