HM digital PM-2 External In-Line TDS Purity Monitor

An ideal monitor/alert for water coolers and other enclosed water purification systems. Alerts a user when the filtration system requires service. FEATURES External single line internal TDS monitor that is ideal for most water purification systems. Includes a light and optional alarm that alerts the user service is required when the TDS level reaches the pre-programmed set-point. User-defined set points (any even number between 2 and 200). SPECIFICATIONS Range: 0-200 ppm (mg/L) Accuracy: +/- 2% Calibration: Factory calibrated Alert: Warning light, optional alarm Light color: Either red or yellow Light function: Either flashes or is steady Alarm: Beeps for 20 seconds, then goes silent Power Source: AC 110V / 220V ±2% Cable Length: 62.86 cm (24.75") Fittings: 1/4" standard, also available with 3/8" or 1/2" Max. Water Pressure: 200 PSIG (at 23°C with a 1/4" fitting) Dimensions: 12.9 x 7.3 x 6 cm (5 x 2.9 x 2.4 in.) Weight: 340 g (12 oz.)