control: an intelligent controller that can water in "liters", accurately control the amount of watering, and reduce water waste. Intelligent linkage: wireless RF433 connection is possible, APP remote is realized by "TUYA Smart" or "Smart Life" APP, it needs to be used with WiFi-RF433 smart Two watering modes: control watering by amount of water, control watering by time; switch at will. The metal joint is practical and durable, and it is not slippery when tightened back and forth. Circulating irrigation: control according to the amount of water, and control according to the length of watering; Timed irrigation: timed watering, timed single watering; Watering statistics: monthly water volume and length, single water volume and time; Power: 4 AA batteries (not included) Colour:grey Material:ABS Package Contents: 2 x Water Controller 1 x WiFi-RF433 1 x English manual Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.