Description: Function: This timing delay relay can control your electric appliance and turn it on or off automatically. Adjustable: This timer control switch allows you to set 3 modes 0 to 999h 0 to 999min and 0 to 999s meeting your different needs. Button Operation: This timer relay is convenient to operate and use simply press the button to set the time. Digital Display: This timing delay relay is designed with a screen that can display information clearly and is easy to read. Suitable Places: This timer control switch is widely used in a home office hotel school apartment dorm and so on. Specification: Material: Plastic Display Size: Approx. 79x43mm/3.11x1.69 inch Mounting Hole Size: Approx. 71x40x24mm/2.80x1.57x0.94 inch Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. includes: 1 *Delay Timer Relay