1. Power supply: Rechargeable 5000mAh lithium ion battery (built-in) normal use (3-5 times a day) about 30 days standby time.APP real-time reminder when the battery power is less than 5% the device will prompt low battery the low battery APP cannot link the device 2. Camera View Angle: 130 degrees 3. Display: 4.3 inch TFT color LCD screen 4. APP: Tuya smart 5. Motion sensor reaction time: low sensitivity middel sensitivity high sensitivity optional in APP high sensitivity about 3-5 seconds delay 6. Photo format: JPG 7. Video format: .avi (need TF card) or buy cloud service 8. Memory card: up to 128GB 9. Motion sensor detect distance about 2 meters 10. Door thickness: 40-115mm (please measure door thickness before purchase) 11. Peephole diameter: 14-22mm 12. Doorbell share: yes 13. Working Temperature: -20 to 55 Tuya Smart Series New era smart home Monitor anytime and anywhere Connect the host to 2.4Ghz WiFi.Support mobile phone remote monitoring: intercom view visitors video calls snapshots recording etc. At the same time it supports 4 mobile APP users so that you and your family can check the outdoor situation at any time. After downloading the Tuya app you can connect the monitoring device to your Smartphone in less than two minutes. The operation is simple and safe .The device supports Android and IOS operating systems. No matter where you are in your home or even abroad you can easily answer the doorbell remotely and monitor the outdoor environment This trend of future technology free your hands and enjoy using a mobile phone to control the whole house of smart home appliances! Certification:CE Smart home platform:Alexa Smart home platform:Tuya Smart home platform:Google Assistant Origin:CN(Origin) Itercom:Yes Connection Type:wireless Alarm:Yes Power:Dry battery Feature:Photograph Feature:Video Display:Color Item Type:Video Doorbell Camera:resolution 1280 * 720 Video format:H.264 Picture format:JPG Display:4.3 inch TFT color LCD screen Door thickness:40mm-115mm(please measure door thickness before purchase) Door hole diameter:14mm-22mm Viewing angle:130 wide angle Material:Metal&Plastic Size:door display:132.8*95*17mm;outside:58*58*20mm Power:DC5V 1A Installation:Wall Mounting Doorbell:Yes Technology:Digital Type:Intercom System Intercom via cell phone and outdoor camera Power interface:micro usb Battery:5000mAh lithium battery Working mode:high sensitivity Infrared night vision:support Microphone:Yes WiFi:2.4Ghz wifi signal