5V button cell batteries (included)   (LR44 or equivalent)

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Automatic Temperature Compensation (ATC): Compensates automatically between 10–40°C (50–104°F)

°Oechsle (°Oe)

HM Digital PSC-150 Extended Range EC/TDS Controller - Relay Control with Alarm water treatment testing 5V button cell batteries (included)PSC 150: Extended Range EC TDS Controller New controller includes extended range, digital calibration, on screen temperature and tri color display. FEATURES: Monitors and controls TDS levels for high output commercial systems. Large, bright L. E. D. display An alarm will sound if the TDS level rises above the user set level. On screen temperature display (C F) Includes one sensor probe PRODUCT DESCRIPTION EC Range: 0 9999 S TDS Range: 0 5000 ppm