Using high-quality materials, the quality is guaranteed. Real-time synchronous feedback of remote output status and water level It can run independently without WIFI, and realize the function of single-machine control of water level. The on-off of one output can be controlled remotely or manually on site (when the set water level value is not reached) It can control drainage with high opening and low closing, or control water replenishment with low opening and high closing, or select time-limited control mode. Remote upper and lower water level alarm APP push function. APP can display the current water level, start water level, stop water level, upper and lower limit alarm water level Two outputs, one water level control, one anti-dry function. The main account can share the device with others, and the device can only be added under one main account (note that the alarm can only be realized if the device and the mobile phone are both online. Without the network, it is like the mobile phone can't make a call without a signal ) Interface size: 4 points (G1/2) Operating voltage range: DC5 ~ 15V Inner/Outer Diameter: 10.9mm/20mm Thread length: 14.5mm12.5mm Water pressure resistance: less than equal 1.75MPa Output pulse high level: Greater than DC4.7V (input voltage DC5V) Output pulse low level: Less than DC0.5V (input voltage DC5V) Insulation resistance: Greater than 100MQ Flow range: 1~30L/MIN Airtightness: Close each hole, add 1.7Mpa water pressure test for 1 minute without leakage and deformation Flow pulse characteristics: F= (7.5*Q) error less than equal 3% Appearance size: 89x55x44mm Installation and size: standard 35MM rail installation Working and consumption: AC220V; Less than 2W Water level display: five-level water level display: 0%, 25%, 50%, 75%,100% Water level control range: full water level: 25%, 50%, 75%, 100% make-up water level: 25%, 50%, 75%, 100% Time limit range: 0-720 minutes, need to be set on the APP, step by 5 minutes to set Relay life: on and off 100,000 times Operating environment: -10Celsius~50Celsius Wireless standard: WIFI2.4GHZ B/G Parameter memory: long-term memory of setting parameters when off, can run offline Colour:As shown Material:plastic Package Contents: 1 x Water level controller 5 x Water level electrode 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.