On/Off Timing Control: Supports programmable delays for power on and off, allowing for timing of load switching. Loop timing mode: enables repeated on/off loops based on user-defined time intervals, making it ideal for loop operations and automated tasks. LED digital display screen: The bright and easy to read LED display screen clearly displays timing parameters and working status, enhancing usability in low light environments. Buzzer alarm function: The built-in buzzer provides sound feedback when setting, triggering, and completing timed cycles to reduce misoperation. Easy to operate with three buttons: an intuitive three button interface for setting time, switching modes, and adjusting parameters, without the need for complex programming. Optocoupler isolation: The input signal and control circuit are isolated by optocouplers to improve anti-interference performance and protect your main control system. Widely applicable: Suitable for timed control scenarios such as delayed start, delayed stop, motor control, lighting control, pump control, DIY smart home projects, etc. Color: As Shown Material: ABS+PCB Specification: 12V Package Contents: 1 * Time delay relay module Only the above package content, other products are not included. Note: Light reflection 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.