Meters

Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push b...

Measures pH and temperature. Selectable units for °C and °F. Backlit LCD display. Double junction probe (not replaceable). Successful calibration i...

Measures indoor/outdoor temperature & indoor humidity. Stores the Min./Max. values of the indoor/outdoor temperature and indoor humidity. Switc...

The Bluelab Guardian Monitor Connect Inline is not only a constant indicator of the desired levels of pH, conductivity and temperature of your nutr...

The Bluelab® Combo Plus Meter is an all-in-one, convenient portable solution for accurate measurement of pH, conductivity and temperature in nutrie...

The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power...

Sun System® PAR Meter with remote sensor measures photosynthetically active radiation (PAR). Use inside with Sun System® grow lights or outside wit...

Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful ...

With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry ab...

Large screen digital readout. Wireless sensor transmits up to 50 feet. Expandable to accept 2 additional sensors. Waterproof casing is chemical and...

Resolution: pH 0.1 pH, 0.00 - 14.0 pH. Accurate to ±0.1 pH. Hold button and auto shut-off. Automatic Calibration: Auto-ranging to 4, 7 or 10 pH. Ve...

With a conductivity range right up to 6.0 EC (60 CF, 3000 ppm x 500 and 4200 ppm x 700), it will never leave you short. The Commercial Truncheon® N...

The Sure Test® Commercial Multi-Meter allows for easy measurement of pH and conductivity (EC or TDS) and temperature (F° or C°) in one versatile un...

The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics & gardening, pools &...

The Sure Test® Commercial Multi-Meter DO Probe allows for easy measurement of dissolved oxygen. For use with the Sure Test® Commercial Multi-Meter ...

Measures pH and Temperature. Auto-ranging three point calibration with digital fine tuning. pH buffer 4 solution is in a sponge embedded in a clear...

HM-500 Replacement pH probe2 Meter / 80 inch cable lengthIncludes pH storage solution, 6-month warranty

Use these cables as a replacement or an extension for the temperature probe on the Gavita Master Controller EL1 and EL2. Choose from 16 ft/5 m or 9...

Use these cables as a replacement or an extension for the temperature probe on the Gavita Master Controller EL1 and EL2. Choose from 16 ft/5 m or 9...

Active Air's indoor-outdoor thermometer gives you more. Made of sturdy materials to stand up to the climate of your indoor grow room, this essentia...

Get temperature and humidity levels at a glance -- even from across the room. The Taylor Precision temperature humidity gauge has a familiar clock ...

The Sure Test® Commercial Lab Meter offers the ultimate in precision and accuracy. Dependably measure pH and conductivity (EC or TDS or Salt) and t...