Features: Intelligent wifi detection Sensoring Unit, make your life more convenient and secure. Support timing function and family sharing, with high decibel alarm and mobile app alarm. App notification warning, let you know the situation at home for the firtst time. App power warning, send reminder when low power, to prevent accidents caused by no electricity. Easy to install, suitable for multiple scenario such as hospitals, schools, hotel, companies, shopping centers, warehouse, factories, etc. Specifications: Material: ABS Color: White Size: about 115x55mm/4.53x2.17inch roduct Weight: 190g Standby Current: <15μA Battery Specification: 9V(1 year standby) Sound Level: 80dB/M Operating Temperature: -10℃~ 55℃ Operating Humidity: <95%RH Detecting Area: 20 Square Meter Package Includes: 1Pc WiFi Detector Alarm note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.