Model Number: PM-1 Brand Name: TLead Key Specifications/Special Features: OEM single line internal TDS monitor that is ideal for enclosed water purification systemsIncludes a light and optional alarm that alerts the user service is required when the TDS level reaches the pre-programmed set-pointUser-defined set points (any even number between 2 and 200)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 110/220V ±2%

Cable length: 62.86cm (24.75")

Fittings: 1/4" standard, also available with 3/8 or 1/2"

Maximum water pressure: 200 PSIG (at 23°C with a 1/4" fitting)

Circuit board dimensions: 8.9 x 6.9 x 3.8 cm (3.5 x 2.7 x 1.5 inches)

Weight: 266.5g (9.4oz)