Description:An induction method: Using the well-known double-window infrared sensors， large-caliber2 sensor sensitivity distance:> 3M3 Sensor sensitivity angle: 120 °4.LED life: 80，000 hours5.LED brightness :1800-2000MCD / stars， emitting angle: 120 °6.LED Light Color: White7 machine operating current: 70 mA8 Power: Using 4 AAA batteries or rechargeable batteries9 extinguished luminous delay time: 15 seconds10 POST time: 15 seconds Storage temperature: -10 ° C -40 ° C11 Products for ambient temperature and humidity:. -5 ° C -38 ° C 5% -93%12 Product dimensions:. 192X35X15mm， Unit: mm Weight: 88 g (without battery)