This wifi doorbell can connect home WiFi and achieve a two way intercom between the doorbell and cell phone. When a visitor presses the doorbell sound is activated and the camera will start sending real time images and call to the cell phone.The user will receive the call and can check who the visitor is, can intercom with the visitor and remotely unlock the door. Features: Support WiFi. Movement detect, Intrusion alarm zone. Support APP Function,Can be applied for Android, iOS, ipad APP Software. Support real time video and audio chat with visitor. Support picture snapping and video recording function. Support Night vision and built-in IRCUT technology,available day and night. Rainproof: Doorbell can be installed outdoors, do not worry about being drenched by rain. Specification: Resolution: 1280 x 720. Feild of Angle View: 166°. IR LED: 6 x 850mm. WiFi: IEEE 802 11 b/g/n. Audio: Two-way talk with noise cancellation. Recording: Device Cloud disk recording(20 seconds). Battery: AC Input/3 x 18650 specification batteries(NOT Included). Monitoring: Device Button, Motion Detect, Remote Live View. Notifications: Push Notifications within 1 second. Device Wakeup: Within 600 ms. Power Consumption: Power Consumption Standby 200uA, Working 170mA. Package Included: 1 x WIFI Doorbell. 1 x Indoor Bell. 4 x Screws. 4 x Installing Accessories. 1 x Wrench. 1 x Sticker. 1 x User Manual