1. Support Bluetooth network; 2. Support 2.4GHz/5Ghz dual-frequency signal, wireless distance 45 meters; 3. Support local switch control; 4. Support Bluetooth control when disconnected from ; 5. Support device linkage; Screen display real-time flow rate, flow data; Support APP remote control valve switch; Support multi-unit switching gal, m³, L; Support sharing, can be viewed by multiple people; There is a built-in backup battery, in the backup state of the record flow to save the local, and at the same time can be emergency switching; Support flow statistics, view total water consumption. Power:DC 5V2A Built in NI- battery with 2600mAh capacity,rechargeable battery Valve Open/close time:12seconds Copper Tube Diameter:DN20 Screen:LCD Water Flow reporting accuracy:0.1gaL Flow Rate reporting accuracy:0.1gal/min Operating water pressure:0-1.3MPa working temperature:1°C-60°C(34°F-140°F) working humidity:1-95%RH Wireless frequency:IEEE 802.11 b/g,IEEE 802.11a/11n/11ac Bluetooth version 5.0 Waterproof leve:IP66 The product appearance and printed words depending on the batch, but this does not affect use Voltage: AC100-240V Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Color: As shown Material: ABS Package Contents: 1 x Water Valve 1 x adapter 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.