Item Type: Security Alarm System Material: ABS Host: Power Supply Mode: AC100-240V Backup Battery: Lithium battery 3.7V, 250mAh (built-in) Wireless Standard: IEEE 802.11 b/g/n Wireless Distance: Approx. 70m/229.7ft Working Environment: -10℃-+50℃ Door Sensor: Power Supply Mode: DC 3V, CR2450 lithium battery 80mAh (built-in) Wireless Standard: ASK 433.92MHz Wireless Distance: Approx. 80m/262.5ft Working Environment: -20℃-+55℃ Infrared Alarm: Power Supply: DC3V, 2 x AAA batteries (built-in) Wireless Standard: ASK 433.92MHz Wireless Distance: Approx. 80m/262.5ft Working Environment: -10℃-+55℃ Doorbell Button: Power Supply: DC3V, CR2450 lithium battery 80mAh (built-in) Wireless Standard: 433MHz Wireless Distance: Approx. 80m/262.5ft Working Environment: -10℃-+50℃ Remote Control: Power Supply: DC3V, CR2032 lithium battery 80mAh (built-in) Wireless Standard: ASK 433.92MHz Wireless Distance: Approx. 80m/262.5ft Working Environment: -20℃-+55℃ How to Use: 1. Download the for Tuya APP 2. The host and mobile phone connect to the same WIFI or hotspot 3. The alarm information is sent to the mobile phone in real time 4. All alarms are connected to the same WIFI and transmit signals to the host 5. The host sends an alarm signal to the mobile phone in real time 6. The status of the alarm can be monitored in real time on the mobile phone 1、Supports expansion to 10 defense zones and 10 wireless detectors per defense zones. 2、Support 8 remote controllers, ASK 433.92MHz wireless standard, 80m wireless distance. 3、Sub?devices have low battery reminders, status tracking, and offline reminders. 4、Wi?Fi layout, no wiring required. Support intelligent scene recognition and reminder of unclosed door. 5、Timing arm and disarm, smart home linkage, alarm push, 100m/328.1ft RF distance. 6、Support intelligent voice control: for amazon alexa, for google assistant, bring you a lot of convenience. 1 x Alarm Host 1 x Infrared Alarm 2 x Door Magnetic Set 1 x Doorbell Button 1 x Remote Control 2 x Screw Pack 1 x Installation Base 1 x Manual