Temperature Resilience:Operates within a wide temp range (-20~70°C), ensuring reliable performance in diverse environments. Door Lock Module|Ceiling Door Lock|Bluetooth 5.0 Connectivity:Leverages low-power Bluetooth 5.0 for seamless smartphone unlocking, ensuring energy efficiency. Remote Accessibility:Enables remote control via TTLOCK R1 remote and G2 gateway, offering flexible door lock management. Open API Integration:Offers an open platform with OpenAPI for system integration, enhancing business management capabilities. App-Based Control:Manage your door lock with ease through the intuitive TTLOCK app, including key generation and monitoring. Specifications Bluetooth Standard: Bluetooth 5.0 BLE Supported Mobile Phone Systems: Android 4.3/iOS 7.0 or later Low Battery Alarm Voltage: 4.8V Voltage Range: 4.5~10V Standby Current: 37mA Operating Current: <200mA Unlock Time: ≈1.5 seconds Operating Temperature Range: 20~70 °C Motor Interface Output Voltage: Battery voltage minus 0.3V Color: As Shown Material: Plastic+Electronic Component Package Contents: 1* Remote door opening module 1* G2 gateway 1* Remote controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.