Install the Panel Mount Controller to constantly monitor TDS levels of water produced by a high-output system. Adjust the calibration to your needs. Immediately know if the TDS levels rise above an acceptable level. The controller installed in a commercial system.		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. Installs easily in minutes. Includes one sensor probe (see photo). SPECIFICATIONS Range: 0 - 999ppm Accuracy: ±2% f.s. Resolution: 1 PPM Temp. Compensation: Automatic (1 - 65 degrees Celsius) Calibration: Adjustable Setting: Controlled by on-screen up/down buttons Relay Control: The unit will transmit an analog signal to a pump/valve when the ppm level reaches or exceeds the control setting Alarm: Optional steady beep (set by user) Display: Bright 5/8" L.E.D. display Probe: 1/2" bushing, 3 meter (9.8 ft) shielded cable Power supply: AC 110V / AC 220V Dimensions: 7.2 x 7.2 x 10.2 cm (2.8 x 2.8 x 4 in.) Monitor Weight: 476 g (1 lb .8 oz) Total Weight: 680.4 g (1 lb 8 oz)