Time Delay Function 8 adjustable time ranges from 1 second to 1 hour give you flexible control over how long a load stays powered. Supports both delay turn on and delay turn off, allowing precise sequencing of when power is applied or removed. This multi function timer helps automate routines without additional controllers. Strong Protection Features includes a power reversal protection diode to guard against reverse polarity. This protection enhances safety and durability in real world use, reducing risk of damage from wiring errors. Load Capacity Suitable for loads up to 250V AC at 10A or 30V DC at 10A. Enables reliable operation with a wide range of appliances and devices while maintaining a compact 12V control solution. Specifications and compatibility Input voltage: DC 12V Load compatibility: up to 250V AC 10A or 30V DC 10A Timing: 8 adjustable ranges from 1 s to 1 h, with both delay on and delay off functions Use scenarios Home automation and lighting control: set delay on to power on exterior lights after dusk or motion detection, and delay off to automatically switch them off after a chosen interval. Equipment sequencing and protection: use delay on to provide a controlled warm up for fans or pumps, and delay off to ensure a safe cooldown period before shutdown. Automation and testing environments: schedule power cycling for small devices or test rigs, (for example) turning a device on after a set delay and turning it off after a defined period to simulate usage patterns. This DC 12V relay module offers a clear, reliable timing solution with strong protection and load capacity, suitable for a variety of control tasks while keeping installation straightforward.