Smart Door Sensor,Zigbe-e Window Door Sensor Alarm,Contact Sensor for Home Security And Smart Home Automation Feature: Hub Required Hub is required. Without Hub, this ZIGBE-E door sensor does not work. one GATEWA-Y can realize the linkage between door contact sensor and smart devices such as switches, plugs or light bulbs, which can add infinite FU-N and technology to your smart life Smart Home Security Sensor You will receive Timel-y alert notifications from the smartphone app when the status of the protected device changes. For example, get real-time alerts at the exact MOME-NT you have an unexpected guest, a runaway child, an opened safe or an escaped pet Multiple ScenariosThis door sensor alarm is an excellent security addition to any contact structure: garage doors, skylights, safes, etc. Watch the security barrier at the top of the stairs or in your child's room. Receive instant alerts if your medicine cabinet, freezer door or kitchen drawers are opened unexpectedly Everything is under ControlSupport checking unlock/ lock records and battery level on app SHARE with FamilySHAR-E Wi-Fi door sensor with family member via free Smart Life app to SHAR-E sense of security. No need cumbersome installation tools Product parameters: Product type: smart WiFi door sensor Rated voltage: 3V Rated current: 10mA Alarm Current:70-120 MA Low power undervoltage:2.7V Working temperature:-10C-50C Working humidity:max 95%RH Sensing range: 3-5m Product size:4x2.5x1.2cm/1.57x0.98x0.47 inch Package size:5.4x3.2x2cm/2.13x1.26x0.79 inch Gross weight:31g/0.07 lb The Package Include: 1 x Smart door sensor 1 x Use manual