Feature: 1. The contact points are silver‑plated contacts and high‑quality pure copper conductive sheets, which have a good response effect 2. High‑grade insulation board material, high temperature resistant and durable 3. With a pressure adjustment knob, it is recommended to cut off the power first, remove the plastic cover, increase the pressure to "+" (CCW), and decrease the pressure to "‑" (CW) 4. Great workmanship, can perfect replacement for the old one 5. Small size, easy to carry and store, convenient to use and with good performance Specification: Item Type: Pressure SwitchRated Voltage: 220V Rated Current: 16A Thread Classification: G3/8 Diameter: Approx.15mm / 0.6in Pressure Range: (pressure matching model) 1.0-1.8KG (suitable for 125W) 1.5-2.2KG (suitable for 250W 300W 371W) 1.8-2.6KG (suitable for 550W) 2.2-3.0KG (suitable for 750W) Generally, as long as the model and pressure correspond Marking Description: Take (1.5-2.2KG) Technical for Example Explanation: When the water pressure is 1.5KG, the water pump will start automatically, and the 2.2KG pressure type water pump will stop workingSize: Approx. 50 x 50 x 15mm / 2 x 2 x 0.6in . Package List: 1 x Pressure Switch1 x Accessories