Feature: 1. HIGH EFFICIENCY AND RELIABLE: Timer relay module is made of excellent ABS material to ensure the efficient and stable performance of the product 2. ACCURATE CONTROL: The timer relay switch module can accurately set the time period and delay to meet user requirements 3. EASY TO USE: The digital timer relay module has a simple interface, user friendly design, easy to set up and use 4. MULTI FUNCTIONAL APPLICATIONS: Timer relay voltmeter is suitable for different scenarios and widely used in various fields such as homes, offices and factories 5. ENERGY SAVING AND ENVIRONMENTAL PROTECTION: The cycle timer relay module adopt low power consumption design to save energy and meet environmental protection requirements Specification: Item Type: Timer Relay Module Material: ABS Technical Parameters: Timing Range: 0-999 Seconds 0-999 minutes 0-999 hours Relay: 20A Product Size: Approx. 79 x 26 x 43mm / 3.11 x 1.02 x 1.69in Hole Opening Size: Approx. 72 x 40mm / 2.83 x 1.57in. Package List: 1 x Timer Relay Module