Tuya Alarm Host with Wireless WIFI Doorbell ( Item#: S4789EU )

Overview: 
This 433MHz wireless WIFI doorbell comes with a transmitter and a receiver. When a visitor presses the doorbell, loud sound is activated with "Tuya" APP notification to remind you to open the door. You will never miss a visitor. It's also an alarm system to ptrotect your home security. It can make your life easier and smarter. 

Features:
* Optional 58 Rinatones bring you colorful & smater life. Choose your favorite ringtone based on your personal preference, making it your intimate friend.
* Add 433Mhz wireless sensors to your doorbell system. Working together with door/PIR motion/smoke sensors etc, making your doorbell a burglar alarm system. (Detection sensors not included)
* Tuya APP remote control, and compatible with Amazon Alexa, Google Assistant for voice control.
* When a visitor presses the doorbell, loud sound is activated with "Tuya" APP notification to remind you to open the door. You will never miss a visitor. 
* Upgraded the design of the receiver station, so that it won't block off any neighboring power sockets.
* Indoor doorbell hub is plug and play, no need batteries, low power consumption. Outdoor doorbell button with anti-tamper alarm function.
* Support phone remote arm / disarm / intercom / monitoring function.
* Support 5 groups preset alarm phone numbers, SMS on / off and dial on / off can be set respectively for each phone number.
* Support 5 kinds of wireless defense zones mode, can be set as doorbell mode.
* Can record 20 seconds alarm voice.
* Support SMS remote setting.

Hub Specifications:
Power Supply: 110/220V AC
Backup Battery: 3.7V, 300mAh Lithium Battery (included)
Consumption: <100MA
Radio Frequency: 433Mhz
WI-FI: IEEE802.11b/g/n
APP: Tuya
Selectable Melodies: 58 Volume 
Levels: 5 (includes mute)
Sound Level(typical): 85dBA
Expandable: up to 100 doorbell buttons/sensors and 10 remote tags
Operation Temperature: -10-55℃
Doorbell Button Specifications:
Power Supply: DC 3V 1* CR2032 Lithium Battery(included)
Standby Current: <5uA
Transmitting Distance: 100m/328ft (Without obstacles and no Interference)
Radio Frequency: 433Mhz
Item Size: 68*43*17mm / 2.7*1.7*0.7in
Operation Temperature: -10-55℃

Package Information:
Package Size: 11.6 * 8.3 * 5.3cm / 4.6 * 3.3 * 2.1in
Package Weight: 140g / 4.9oz

Package List:
1 * Alarm Panel/Hub(Receiver)(US) 
1 * Outdoor Transmitter(Doorbell Button)
1 * Sticker
1 * User Manual(English)