WORK STANDALONE,EASY TO USEwifi pir motion sensor,APP Remote Control.Use Tuya APP for free,it can be used independently by connecting to WIFI without connecting to the alarm main unit.Minimalist screen,easy operation, Real-time monitoring of whether there is anyone through the Tuya APP, when there is movement detected, the alert will be push to your phone,clear at a glance. Can be used with Alexa, Google Home and Siri. WIDE DETECTION AREAsmart wifi motion sensor, Adopting Fresnel optical les detection technology,12m detection distance,all 110fan-shaped spaces effective detection angle,prevent crawling underreport through undetected behavior.^ ACCURATE ALARMThe indoor motion detector with reflecting mirror detection technology,it can accurately alarm even in strong sunlight(Anti-white light 7000Lux),realize real-time monitoring day or night;prevent false alarms or underreport from pets under 25KG.A complete stand-alone motion sensor based alarm system for shed, kitchen, room, boat, garages, etc. LOW BATTERY WARNINGUsing smart recognition technology, use 2pcs AAA batteries,Ultra-long Standby Time 30ua working time can last for six months without to replace the battery. When it during the low power battery indicator lights up in green, and the phone receives a remote reminder.(Important Note: Do not instal it in places like shop and mall where people are come and go, battery will be out quickly due to frequent alarmThis product does not include batteries).