Photo resolution: 480x272
Photo format: JPEG
Image sensor: 2 MP 1/4 inch OV CMOS
Lens: 90°, F2.8 (aperture)
Transmission mode: 2.4G RF
Transmission distance: 115 feet
Key-press: 1 key-press（only for photograph）
Speaker: Ding dong Sound
Fixed and mounting method: 3M glue or Screw（5pcs screws）
Battery installation & uninstallation: Fastener(No screw, easy to install & uninstall）
Power Supply Mode: 4pcs AAA batteries (not included)
Transmission mode: RF+WIFI
Transmission Date: WIFI 2.4G
Receive Date: RF 2.4G
Transmission distance: RF 115 feet +WIFI 115 feet
Energy efficiency Class: Class 6
Indicator light: 1 PCS
Surface treatment: Source material
Reaction time: 2s-3s（According by network environment）
Instant Alerts - Get instant HD photo alerts to the smart phone when visitors press your doorbell or trigger the built-in motion sensors, watch over your home in HD picture
Free Cloud Server - Visitor records will be storage in free cloud server, no need to buy extra SD card. Photos of each visitor are recorded on the server for easy viewing later.
Easy to Install - 3M adhesive stick or screw fix installation, no wiring required. Can install it anywhere you want.
Package Contents -1 plug-in receiver Chime, 1 remote Wi-Fi doorbell transmitter, 1 set screws and fixed frame(include double side sticker)
100% Satisfaction and Money Back Guarantee - if you have any questions or qualms about this product, don't hesitate to let us know. Either we'll give you a FULL refund, or we'll work with you till you're satisfied.