Specification :

Well Watcher hydrostatic level gauge system is designed for water well level monitoring and control. Ease of installation combined with no calibration makes the Well Watcher the choice for low maintenance water well measurements.

2-wire intrinsically safe “ down well� transmitter, factory pre-configured for a specified measurement range
Measurement ranges to 690 ft.; Accuracy: 0.25% of range
Simple installation with virtually no maintenance