Product name
Tuya Smart WiFi+GSM/4G+CID Alarm System
Power Supply
Micro USB 110/220VAC to 5V, 1000mA
Network
wifi, GSM, 4G, CID
Feature
High Pressure Alarming Voice
Backup Battery
3.7V, 500mAh Lithium Battery
Keyword
Security Alarm Sensor
Wireless frequency
433.92 MHz