Feature: 1. Turn on the power, trigger the terminal button or PNP type sensor trigger, when there is a high level trigger (or the button is connected to the positive pole of the power supply instantly), start to work. 2. With countdown delay function, when the delay time expires, the relay will be disconnected. 3. The 12V delay module with digital LED countdown display has stable performance and a wide range of applications. 4. Using military‑grade double‑sided PCB material, strong and durable, has a long service life. 5. The product is accurate time delay, the error is 0.01% per second, the delay is 0-999 seconds, and the LED changes every 1 second. 6. The delay time can be set by yourself. After setting, will count down according to the set value after the power‑on and start; Specification: Item Type: Relay ModuleProduct Material: PCB Display: LED Voltage: Voltage 12V Current: Standby: Approx. 12ma When The Relay Is Working: Approx. 50ma. Package List: 1 x Relay Module