166° wide viewing angle, You can clearly see your front door, and the pictures in front of it can be well recorded. IP66 Waterproof Doorbell, It can be installed in the outdoor doorway, even if it rains and snows, it can still work normally. Wireless doorbell, Volume control,max volume up to 100 dB,with LED indicator.when you at home and your mobile phone is not around you,with this wireless doorbell ,it can also remind you. PIR Motion Detection & Instant Alerts， PIR detection and body filtering technology only detects mammals or anything above temperature 86 F 30 C largely reducing false alarms caused by rain, snow or leaves. Alert notifications can be pushed to you and users you share via APP in real-time wherever you are. Two-Way Audio & Voice Message, The video doorbell has a builtin speaker and microphone You can have a realtime communicate with your visitors or select a prerecorded voice message for quick replies, You can also warn strangers to leave that have not received your invitation. Protect your family whether you are at home or not., Manufacturer: QAXRZCUCD