Model Number: QC-1-#3358 Brand Name: TLead Key Specifications/Special Features: With the push of a button, the unit displays a green or red light, indicating good water quality or service required, respectivelyTests for TDS or conductivity levelsEight programmable set points (by dip switch)Bright LED lightsSimple to use

Factory calibrated to 100 ppm NaCl. Re-calibration is unnecessary

Comes equipped with Mur-lok Quick-Connect T-fitting (1/4 inch standard, also available in 3/8" or 1/2" )

Excellent Reverse Osmosis (RO) or de-ionization (DI) monitor

Installs quickly and easily

TDS/EC range: 0-5000 ppm (10,000 S)

Maximum set point: 50ppm (100 S)

Accuracy: ±3%

ATC: no

Cable length: 24.5" (including sensor)

Fittings: 1/4"

Power source: 4 x 1.5V button cell batteries (389-A) (included)

Battery lifespan: approximately one year

Size: 7.6 x 2 x 4.7 cm (3 x .8 x 1.9 inches)

Weight: 39.7 g (1.4oz) (not sensor included)