Features: Thread: G1/2, Rated voltage: 110VDC , Installation: Hizontal. Water is not easily scaling, which is conducive to f health. A great choice f you. Can be used a lot of times, long service life good reliability. Its quality is guaranteed. Used in the instantaneous electric water heater, can save electricity power. Meet your needs. Depending on the switch control mode, it can be used in two ways: water outlet power on water outlet power off. Package Includes: 1x Water Flow Switch Specifications: Material: Plastic Length: approx 5.2cm/2in Switch accuracy: 1-10cm/s Medium temperature: -20-80 Thread: G1/2 Rated voltage: 110VDC Installation: Hizontal note: Please allow 1-3cm err due to manual measurement. pls make sure you do not mind befe you bid. Due to the difference between different monits, the picture may not reflect the actual col of the item.