Time delay function The DC 12V relay module provides a multi function timer with 8 adjustable time ranges from 1 s to 1 h. It supports both delay on and delay off actions, enabling flexible control of power supply and connected devices. Strong protection features Equipped with a power reversal protection diode to guard against reverse polarity. This enhances safety and durability, helping protect the module and connected equipment. load capacity Designed to handle substantial current. The module can switch loads rated at 250 V AC up to 10 A or 30 V DC up to 10 A, providing reliable performance for a range of appliances and systems. Compatibility and performance Coil voltage is 12 V DC, making it suitable for 12 V control circuits and compatible devices. The combination of multiple timing options, bidirectional delay timing, and strong protection offers dependable operation in automation and control tasks. Use scenarios Lighting control with delayed off: keep lights on for a set period after activation, then switch off automatically. Pump or fan control: start or stop with precise timing to manage inrush or run cycles. Irrigation or valve control: automate timed opening and closing for efficient water use.