Low Voltage: This delayed relay module can operate with a low voltage of 3V or more. Wide Usage: The switch is widely used to control motors, light bulbs, LED belts, DC motor, small pumps, etc. Supply: 3.7V Lithium Batteries, 5V Power Supplies, Switching Power Supply can be used to power this relay card. Optimal isolation: The isolation of the optical coupling of the module improves the anti-interference ability. printed circuit board: The module uses a printed circuit board on an industrial level and saves the set parameters after a power failure. Working current: DC 3V ~ 7V. Voltage range with tab: 3 V ~ 5.5 V. Voltage range without tab: 3.8 V ~ 7 V. Signal source: DC 3V ~ 12V (usually use positive trigger, button, PNP sensor, PLC signals, etc.) Output Capacity: Can control the devices in DC 30V 3A or AC 220V 3A. Quiescent current: 15 mA Working current: 30 mA. Lifespan: 100,000 times. Operating temperature: -40 ~ 85 Celsius. Tips: Mode selection: After power on, long press K1 for 2 seconds, short press K1 to enter selection mode P1~4 selection, K2 enter mode. P-1: The signal triggers the relay to pull in. When the time is up, the relay is disconnected. During the delay period A: Trigger again is invalid B: Trigger again to re-timing C: Trigger the relay again to reset and terminate timing P-2: Signal trigger start timing time T1, when the time is up, the relay pull-in time T2 is disconnected (reset) P-3: Recycling use: turn on T1, turn off T2, endless loop. T1 and T2, the time is adjustable Colour:blue Material:Electronic component Size:64.2x34.8x15mm Package Contents: 1 x Time Delay Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.