This is a relay module with an automatic delay timer. The module consists of a 12V relay along with a three-digit seven-segment display. The module is based on an N76E003AT20 microcontroller. The module has three buttons one to control the function and others to set the delay time. Features: Increase the power supply anti-reverse function. The use of opto isolated input and output enhanced anti-jamming capability and consumption. The last setting parameters can be memorized after power off. A signal terminal voltage signal can be maintained for a long time. To ensure stability, industrial grade PCB board. Specifications: Timing Range(Selectable): 0.1~99.9 seconds : 1~999 seconds : 1~999 minutes Operating Voltage (VDC): 12 Signal Voltage: 4 – 20VDC Output Capacity: Can Control the Load within DC 30V 5A or AC 220V 5A Static Current: 20mA Working Current: 50mA Operating Temperature (°C): -40 to 85 Length (mm): 68 Width (mm): 40 Height (mm): 25 Weight (gm): 44 Package Includes: 1 x 12V Relay Module with Automatic Delay Timer