Features Supports 2 modes, mon mode (once) and cycle mode, and you can easily switch the mode by adjusting the jumper. Widely used in timer operating equipment, machine repeat test circuits, intermittent fish tank pumps, etc. It is great to control the hub or repeated on/off for device and product burn-in testing. It is a time relay module with high precision, stable and reliable performance. There is a large time range that you can set, both the switch-on time and the switch-off time are adjustable. Specifications: Type: DC5V,0-15min/DC5V,0-60min/DC12V,0-15min/DC12V,0-60min/DC24V,0-15min (optional). Maximum load: 10A250VAC, 10A30VDC. Size: 70 x 20 mm/2.75 x 0.78 inches. Time error: <2%. T1 (the relay switch-on delay time), T2 (the relay switch-off delay time) Single mode (Jumper OP3): 1. The module power-on, when the relay is triggered, T1 is delayed and the relay is disconnected. 2. If the delay process is triggered and triggered again, the delay is immediately interrupted. Cycle mode (jumper OP4): 1. The module power-on, when triggered, the relay is switched on, delay T1, and the relay is disconnected, delay T2, the relay is switched on again. Such cycle. T1 and T2 are each set by two adjustable resistors. 2. If the delay process is triggered and triggered again, the delay is immediately interrupted. How to set the time quickly: The time can be quickly adjusted by measuring the voltage (Uc) of the resistance. Take a 5V 15 minute module as an example. If Uc=2V, time=2V/5V*15min=6min. Package includes: 1 x Time Relay Module Package List