The 10mm open version of the interface is made of iron, and the 12mm open version of the interface is made of plastic. Please pay attention to this before purchasing. Human body infrared sensor Sensing distance, light intensity, and power are adjustable Compact size and high sensitivity 160-degree monitoring range Switch to adjust day or night operation: - When set to sun position, the sensor operates all day - When set to moon position, the sensor operates only at night TIME switch adjusts sensor delay time (8 seconds to 6 minutes) Delay time refers to the duration the sensor remains active after detecting motion and the person leaves the sensing area SENS switch adjusts sensor sensitivity; generally no adjustment needed If sensitivity is too strong and light stays on, sensitivity can be set to minimum Fresnel lens provides efficient light refraction Flame-retardant casing, impact resistant Detection range: 160 degrees Detection distance: 6-8 meters (at 25°C) Ambient light level: 2-2000 lux (adjustable) Working humidity: less than 93% RH Installation: open type (10mm opening) Working voltage: AC85-265V Delay time: 8 seconds to 6 minutes (adjustable) Working temperature: -10°C to 40°C Installation height: 1.8m to 2.5m Color: black Material: flame-retardant ABS Size: 75 x 42 x 52mm Package Contents: 1 x Sensor switch 1 x English manual Only the above package content, other products are not included Note: Light and different displays may cause the color of the item in the picture to differ slightly from the real thing. Measurement may vary by +/- 1-3cm.