| Sort by Popularity | Manufacturer | Product(s)+ | Model | Price | Buy Now |
| | | 13" Round Thermometer
13" Round ThermometerKeep an eye on your growing area's temperature with this large numbered thermometer. ... — Ships via UPS from Portland, Oregon USA...more. | MI732 | $10.95 | |
| | HydroFarm | Digital Light Meter
Digital Light Meter (eco-5549)Digital Light Meter (Footcandles)
Digital Light Meter
Measures grow lights or sunlightMeasures up to 5000 footcandles3 scales for precise readingsConvenient hand-held remote sensorLifetime silicon cell - includes battery, informative booklet with lighting recommendations and carrying case
Digital Light Meter helps the gardener measure grow lig... — Ships from Seattle, Washington USA...more. | eco-5549 | $29.55 | |
| | | Digital Thermometer/Hygrometer.
Digital LCD Minimum, Maximum thermometer and humidity device. Allows you to reset minimum and maximum settings. Large letters for easy reading. Comes with 1 AA battery. This is not a controller. Displays the readings only. Very nice! Almost 4 1/2 height x 4 length almost 1 inch depth (thickness) screen is 2 1/2 x 3 inches.... — Ships via UPS from Portland, Oregon USA...more. | MI419 | $24.95 | |
| | ECOPLUS | ECOPLUS™ LARGE DISPLAY WATERPROOF INDOOR/OUTDOOR THERMOMETER & HYGROMETER
EcoPlus® Large Display Thermometer/Hygrometer
ECOPLUS THERMOMETER & HYGROMETER
Measures indoor/outdoor temperature & indoor humidity.Stores the Min./Max. values of the indoor/outdoor temperature and indoor humidity.Switch between C and F.Clock function with alarm12/24 hour mode switchWater proof temperature probe - 10 ft cord
Manufacturer's ... ...more. | 716560 | $14.79 | |
| | ECOPLUS | ECOPLUS® DIGITAL THERMOMETER/HYGROMETER W/ONE REMOTE SENSOR
EcoPlus® Digital Thermometer/Hygrometer w/Remote Sensor WIRELESS THERM & HYGROM W/ REMOTE
Large screen digital readout.
Wireless sensor transmits up to 50 feet.
Expandable to accept 2 additional sensors.
Waterproof casing is chemical and UV resistant.
Displays degrees in F or C.
2 AA batteries included.
Wireless Sensor:
For use with EcoPlus Digital Thermometer & Hygro... ...more. | 716555 | $24.10 | |
| | | High/Low Thermometer.
Farmtek High/Low Thermometer. Records the days high and low temperatures. Uses real mercury for accurate readings. The small red wand detaches and you pull the indicator back in contact with the mercury to reset. Great product.... — Ships via UPS from Portland, Oregon USA...more. | MI730 | $19.39 | |
| | HydroFarm | Hydrofarm Light Meter
Hydrofarm Light Meter (eco-4541)Hydrofarm Light Meter (Footcandles)
Hydrofarm Light Meter
Photosynthesis & Plant Growth depend on the sun or specially designed lighting systems. But of that light reaching the plant, only specific types of energy (in the lighting spectrum) drive the photosynthesis process. Since light is the most important single factor affecting your... — Ships from Seattle, Washington USA...more. | eco-4541 | $15.09 | |
| | Control Wizard | Indoor Weatherman.
Indoor Weatherman by Control Wizard Products.Minimum/Maximum Thermometer with Humidity Readings as well.... — Ships via UPS from Portland, Oregon USA...more. | CW610 | $17.48 | |
| | Trans Instruments | Light Meter - HortiCare LITEcheck
Light Meter - HortiCare LITEcheck (716022)Light Meter - HortiCare LITEcheck
Plants have an optimal intensity of light. The process of photosynthesis is maximized and plant growth is greatest at this optimal intensity. If the level of light is less, growth is reduced. In a typical plant, light level of 400 foot Candle is just enough for the rate of photosynthesis to equal the rate o... ...more. | 716022 | $51.02 | |
| | P3 International | LUXPRO® PROGRAMMABLE DIGITAL THERMOSTAT
LuxPro PSP300 Programmable Digital Thermostat
Easy to program.
Separate programs for heating and cooling.
Temporary and constant temperature override.
Three year warranty.
Plugs into normal 120 volt 15 amp electrical outlet.
5-minute short cycle protection.
... ...more. | 734130 | $48.41 | |
| | Milwaukee Instruments | MI LUX LIGHT METER WITH WATERPROOF PROBE
Lux Light Meter With Waterproof Probe Model SM700
UNDERWATER LIGHT METER
NEW!User can select 3 ranges: 0.00 — 1999 Lux, 2000 — 19999 Lux or 20000 TO 50000 Lux. The range setting through key buttons. Resolution of 1 Lux / 10 Lux / 100 Lux with accuracy of +/- 6%. The peak wave is 560 nm with silicon photo diode sensor. 9 Volt battery — 150 operational hours. ... — FREE shipping when ordering $75 or more of qualifying items....more. | 716430 | $103.90 | |
| | | MINI GREENHOUSE THERMO-HYGROMETER
Mondi Mini Greenhouse Thermo-Hygrometer This revolutionary product mounts anywhere on your Mondi Mini Greenhouse
and reads the temperature and humidity inside the dome. In combination
with Mondi Easy Vents, it ensures plants get the start they need by
providing growers with the essential real-time information necessary to
produce large quantities of healthy plants.
Dis... ...more. | 726125 | $16.34 | |
| | | Moisture/Light Meter.
RAPITEST MOISTURE AND LIGHT METER WITH PROBE.... — Ships via UPS from Portland, Oregon USA...more. | MI212 | $22.95 | |
| | HydroFarm | Quantum Light Meter
Measures grow lights or sunlight
3 scales for precise readings
Convenient hand-held remote sensor
Lifetime silicon cell - includes battery, informative booklet with lighting recommendations and carrying case... — Ships from Seattle, Washington USA...more. | eco-5552 | $168.69 | |
| | | Rapitest Dial Compsot Thermometer (6/Cs)
Rapitest Dial Compost Thermometer
Easy to read stainless steel thermometer with 19" probe, specifically designed for compost.... This item is sold individually....more. | 716919 | $16.33 | |
| | Sun System / Sunlight Supply | SUN SYSTEM HANDHELD PAR METER
PAR Meter with Integrated Sensor
Sun System® PAR Meter comes with an integrated sensor to measure photosynthetic active radiation (PAR). Use inside with Sun System grow lights or outside with natural sunlight. Simple and easy to use. Compact size with integrated sensor. 1 year warranty.... ...more. | 748200 | $252.95 | |
Meters, Timers & Instruments 
