Specifications and parameters: Power supply mode: 2 AA batteries (5 ), display mode: digital screen, working temperature: 3-45C, size: 118*98*42mm, working water pressure: 0.02-0.8Mpa, water inlet: inner tooth 27mm , Net weight: 198g (excluding battery weight), water outlet: outer teeth 27mm, low battery status: blue light flashes (battery needs to be replaced), working voltage: 3.0V. This product uses the solenoid valve switch to control the opening time of the water flow, so as to achieve the purpose of irrigation and watering intelligently and quantitatively, and is widely used in farms, gardens and gardens. The product has certain requirements on the water pressure, which mainly relies on the water pressure to push the water out. If the water pressure is small, the water outflow effect cannot be achieved. The required water pressure is 3-8 kg, which can be achieved by general municipal tap water pressure. (Water tanks, water towers, and wells do not It is recommended to use or purchase a booster pump to pressurize before use). The timer must be placed upright, and it is forbidden to place it upside down or horizontally. Please install it tightly at the screw port to prevent water leakage and water seepage. Note: The product does not include water pipes and nozzles, and does not include batteries, which need to be purchased by yourself. (If you cant use the product installation, please contact the email after purchase, we will attach a tutorial)