HM Digital DM-2 Commercial Dual TDS Monitor aquarium pH meter Meters can be recalibrated with

Meters can be recalibrated with a mini-screwdriver

Most marine systems target 1

Weight (with case): 76

the unit displays a green or red light

The unit shuts off automatically after 10 minutes of non-use

HM Digital DM-2 Commercial Dual TDS Monitor aquarium pH meter Meters can be recalibrated withInstall on industrial systems such as car washes, window washing, manufacturing, and food processing. UPGRADED APRIL 2012! The newly upgraded model features digital calibration, low battery indicator, improved accuracy, longer battery life (2 years), longer auto shut off time (3 min), diagnostic error messaging, and shielded sensor cables. (Upgraded features below are in red.) FEATURES Highly efficient and accurate due to its advanced microprocessor