Alarm Smart Door/Window Sensor Detectors work With Alexa and Google Home

Alarm Smart Door/Window Sensor Detectors work With Alexa and Google Home Communication method: Wi-Fi Certification: CE Model Number: WiFi Smart Door Window Sensor Color: White Battery Model: AAA 1.5V Working Voltage: DC3V (2 x 1.5V battery) Wi-Fi: IEEE 802.11 b 2.4GHZ Quiescent current: ≤40 μA Material: PC V0 Product Name: SONOFF DW2-WiFi / DW2-RF Wireless Door/Window Sensor APP: eWelink Voice Control: Work With Amazon Alexa / Google Home Smart home platform: Google Assistant smart home: Sonoff DW2-RF Door Window Sensor smart home gadgets: SONOFF DW2 Wifi door window sensor Real-time notification: Via eWelink APP Notify you when the door/window is opened Ewelink App: Support to check history record on APP Manufaturer: SONOFF Original Factory Shipment: Free Shipping Support Retail: Support Drop Shipping Support Wholesale: Support Fast Shipping Feature 1: Keep linkage with SONOFF smart devices to create various smart scene Feature 2: Sonoff DW2-WiFi Version No Gate