With curved glass (with anti-fogging function). Use moving-magnet principle to drive the needle, featuring good endurance and anti-vibration. Be suitable for all kinds of water level sensors with same signal, and display liquid level of the water tank. Stepper motors used for full range of stepping gauges, great feature with its less power consumption, longer life, higher precision, etc. Suitable for various water level sensors with the same signal and display the level of the tank., Manufacturer: KONGMM