Bluelab PENCON Conductivity Pen Fully Waterproof Pocket Tester, CF, EC, PPM 500, PPM 700 Pool Cleaners Red Backlight Display: Clear visibility

Red Backlight Display: Clear visibility in low-light conditions

shockproof and anti-slip

For use with most 300-8

Eco Power save mode to conserve power from the battery

The adjustable brightness feature allows you to customize the display intensity to match your environment and preferences

Bluelab PENCON Conductivity Pen Fully Waterproof Pocket Tester, CF, EC, PPM 500, PPM 700 Pool Cleaners Red Backlight Display: Clear visibilityConductivity pen can monitor your nutrient level to maximize your grow and ensure plants get the balanced feed they need; calibration optional Auto temperature compensation makes this digital meter a handy tool with backlit LCD display and selectable units Complete your monitor and controller system with other testers and meters from Bluelab Other features: auto off function, low battery indicator, units for temperature; KIT INCLUDES: AAA battery Made