Product details:

Watermark 30-KTCD-NL Digital Readout Meter Used to read Watermark 200SS soil moisture sensors Portable for use in multiple locations Uses a standard 9V Battery Only one meter is necessary to read multiple WATERMARK Sensors WATERMARK Voltage Adapter for use with standard WATERMARK sensor. Converts sensor output to a calibrated linear voltage signal that can be read by other manufacturer’s reading devices. Can be added to individual sensor wiring anywhere between the sensor and the reading device connection. Add a soil temperature sensor (#200TS) for temperature compensation.