Specification:Size: 40 x 20mmWorking voltage: 5-12VFeature:1. After power-on, when there is an external trigger signal, the module began to delay, and output signal, after the delay time reach, the signal output finish.2. The delay time is adjustable, the default delivery is 0-120 seconds.4. LED indicator light indicates the output level5. Can be connected to relay or other modules, to achieve control of high current working condition6. with input power indicator7. Onboard test button, can be used as a trigger button8. Input:VCC: 5-12VGND: groundIN: Trigger: active high level (trigger voltage 5-12V and power supply common ground)9. Output:OUT: 5-12V output signal (The output voltage is related to the input voltage), when not triggered the output is low, when triggered into a high level, after the end of the delay to a low level.GND: groundPackage included:5 x Adjustable NE555 module