When the Sensor Light Switch is set to \"ON\" or \"OFF\", it can be used as a regular switch, and when it is set to \"PIR\", it can be used as an infrared sensor switch. Adjustable Sensitivity - The light sensitivity of the Sensor Light Switch can be adjusted. Sensitivity adjustment range and sensitivity from 30% to 100%. Adjustable Delay Time - The delay time of the Sensor Light Switch can be adjusted. Presence sensor light switch has variable time delay from 5s-7min. Internal Electromagnetic Compatibility - The internal electromagnetic compatibility design of the Sensor Light Switch does not affect the normal operation of other electrical appliances. Widely Used - This Sensor Light Switch is commonly used to control lighting and extract ventilation for Stairs Corridor Kitchen. Delivery quantity: 1pc, Package content: Only the above package content, excluding other products. Size: 80x80mm (Reminder: The size is measured manually, please allow 1-2 cm measurement error) color: White (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown in the picture.)