WiFi Configuration & Networking: Install 'Tuya Smart' APP on your smartphone the first time you use the detector. Make sure your smartphone is connected to the WiFi. 1. Launch the APP, click 'Add device'---'Security Sensor'---'Sensor (WiFi)' / "Smoke(WiFi)". 2. Long press the 'TEST' button for 5s until LED flashes with a short beep of 'Di' (long press the button within 20s of loading the battery to enter WiFi configuration mode). 3. Click 'OK' in the APP---input password for the WiFi an click 'OK', the detector enters configuration mode which lasts for 60s maximum. A long beep of 'Di' with LED indicator on for 10s means the WiFi configuration is completed. When WiFi configuration fails, the detector exits configuration mode with short beep of 'Di Di Di'. WiFi configuration is done based on the 3 steps above. WiFi Networking Status: when LED indicator is on for 10s after battery is loaded, it means the detector is successfully connected to WiFi. This WiFi strobe smoke detector is the device which can detect smoke occurred at the beginning of a fire disaster and generates live strobe &sound alarm, at the same time, push alarm information to mobile app by WiFi. Power supply:DC9V alkaline battery (no include 6LR61) Static current: less than 10uA Alarm current: less than 100mA Working temperature:0℃ ~ +50℃ Humidity: less than or equal to 95%RH,no freezing Alarm sound: more than 80dB Low battery alert: less than or equal to 7.0V +/- 0.2V Mute & Testing Mute: in alarm status, press the 'TEST' button to mute the buzzer, only LED indicator flashes. Testing: in normal status, long press 'TEST' button for 2s to trigger the sound & light alarm, alarm message is pushed to the mobile APP. Installing method 1. Make a hole on the ceiling by using the percussion drill 2. Install the expansion tube on the ceiling 3. Fix the installation board by using the screw 4. Aiming the alarming device with the installing board and connect them, rotating clockwise till heard the "kaca" sound, means installing correctly. Colour: white Material: plastic Package Contents: 1 x Smoke Detector (1*DC9V battery power supply without battery) Only the above package content, other products are not included. Note: Light shooting 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.