Battery Deep Well Underground Water Level Meter 

GLT500A 30-500m Steel Tape Battery Deep Well Underground Water Level Meter Why do you choose GLT500A? 1.Sensor probe diameter only 14mm, It can be used for measurement of narrow pipe space. 2.The anti-corrosion electrode of GLT500A can effectively prevent the electrode from oxidizing and rusting, and maintain the long-term sensitivity. 3.30-500M measuring range is optional. 4.Easy to use.It with sound and light alram to remind you recording the correct level value.   How to use ? The water level meter is made of the probe, steel ruler and reel . ♦Put the probe to the water slowly, when the probe touch the surface of water,the electric potentialwill be happened. ♦After dealing by circuit board.The so…