Timers and Instruments

18 products


  • Sale -23% PHOTOBIO Advanced Quantum PAR Meter Hydroponic Center PHOTOBIO

    PHOTOBIO Advanced Quantum PAR Meter

    PHOTOBIO Advanced Quantum PAR Meter Product Details All new for 2020, the Advanced Quantum PAR Meter provides accurate and cost-effective measurement for all light sources used to grow plants.  The PHOTOBIO by Phantom Quantum PAR meter is designed to measure PAR (Photosynthetically Active Radiation) flux in wavelengths ranging from 400 to 700nm. There is a proportional relationship between the number of photons absorbed in 400 to 700nm band and the rate of photosynthesis in plants, which is important for horticultural studies and monitoring plant physiology. The Advanced light meter comes complete with a remote sensor, two connection cables, the main unit and easy to replace AAA batteries. The PAR meter can store up to 99 measurements for easy reference.  Portable PAR meter with highly accurate remote quantum sensor Measures photosynthetically active radiation (PAR) from 400 to 700 nm Simple and easy to use Record up to 99 readings Includes short coiled and long straight connection cables   Instructions 

    $219.99$168.70

  • Sale -2% Autopilot Dual-Outlet Analog Grounded Timer, 1725W, 15A, 15-Minute On/Off, 24 Hour Hydroponic Center Autopilot

    Autopilot - Dual-Outlet Analog Grounded Timer, 1725W, 15A, 15-Minute On/Off, 24 Hour

    Using an analog timer to automate your lighting adds convenience and encourages productive growth with consistent hours of light. Timers are also essential for many hydroponic system applications. Features:  15 minute on/off 24 hour cycle Controls two outlets simultaneously 15A/1725W UL-listed

    $18.99$18.59

  • Sale -2% Autopilot 7-Day Grounded Digital Programmable Timer, 1725W, 15A, 1 Second On/Off, 8 On/Off Cycles Autopilot

    Autopilot 7-Day Grounded Digital Programmable Timer, 1725W, 15A, 1 Second On/Off, 8 On/Off Cycles

    Using a timer to automate your lighting adds convenience and encourages productive growth with consistent hours of light. Timers are also essential for many hydroponic system applications. Features 1 second on/off Up to 8 on/off cycles per day Excellent for hydroponic systems 15 amp UL-listed FOR MORE THAN 8 ON/OFF CYCLES PER DAY, USE APCTART 1 minute on/off Up to 8 on/off cycles per day Excellent for hydroponic systems 15 amp maximum load UL-listed for safety

    $23.99$23.49

  • Sale -6% Digital Integrated Sensor Module Link4 Corporation

    Digital Integrated Sensor Module

    D.I.S.M Digital Integrated Sensor Module CO2, temperature, humidity, and light sensor.Comes standard with iPonic Series Temperature Humidity CO2 sensor High-resolution light sensor 16 ft cord

    $531.99$500.39

  • Sale -20% GroStar GS2 Soil pH Pen Hydroponic Center GroStar

    GroStar GS2 Soil pH Pen

    GroStar GS2 Soil pH Pen   Product Details AI31020 - GroStar GS2 Soil pH Pen Lab grade instruments designed specifically for growers! Includes: pH 7 &  pH 4 solution (50ml bottles of each), KCL soaking solution (10ml bottle), cleaning brush, hole dibber, lanyard and user manual Measures pH and temperature in nutrient solution, soil, coco coir, rockwool, and many other media types Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance Impact-resistant spear glass tip, 10 times stronger than conventional glass bulb PTFE ring prevents a clogged junction caused by soil particles, significantly increases durability Backed by Apera's proprietary sensor technology from Switzerland Easy-to-use design and fast calibration adjustment Replaceable Swiss LabSen Spear Soil pH Probe Large 3-color backlit screen gives you clear information Durable structure, IP67 waterproof Powered by AAA batteries with auto off function Automatic temperature compensation 2-year warranty on pen, 1-year warranty on probe

    $256.99$205.59

  • Sale -20% GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen Hydroponic Center GroStar

    GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen

    GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen Product Details AI21040 - GroStar GS4 pH/EC/500ppm/700ppm & Temp (5-in-1) Combo Pen Lab grade instruments designed specifically for growers! Includes:  pH 7 & pH 4 calibration solution (50ml bottle each), 2.77 EC (50ml bottle) and KCL storage solution (10ml bottle), lanyard and user manual Measures pH, conductivity (EC and 500ppm/700ppm) and temperature (5-in-1) Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance Easy-to-use design and fast calibration adjustment Double junction replaceable probe, so you don’t have to discard the entire pen when the probe reaches its end of life Large 3-color backlit screen gives you clear information Durable structure, IP67 waterproof Powered by AAA batteries with auto off function Automatic temperature compensation 2-year warranty on pen, 1-year warranty on probe Compatible with all Apera GroStar probes

    $178.99$143.19

  • Sale -6% Autopilot Surge Protector with 8 outlets & timer Autopilot

    Autopilot Surge Protector with 8 outlets & timer

    Expand wall outlets and control your equipment with this 8-outlet power strip with surge protection and built-in timer. Offers 4 timed outlets and 4 always-on outlets, with indicator lights for each type. Timer has 15-minute increment pins. Timer override switch provided. Lighted power switch also acts as circuit breaker/reset. Features 4 timed, 4 constant outlets Power indicator Surge protector 6' power cord Circuit breaker switch for safety

    $31.99$30.23

  • Sale -6% GroStar pH calibration kit (pH 4/7/10, 8 oz. each) Hydroponic Center GroStar

    GroStar pH calibration kit (pH 4/7/10, 8 oz. each)

    GroStar pH calibration kit (pH 4/7/10, 8 oz. each) Product Details GroStar by Apera pH calibration kit (pH 4/7/10, 8 oz. each) Kit Includes: (1) pH 4.0 calibration solution 8 oz. (1) pH 7.0 calibration solution 8 oz. (1) pH 10.0 calibration solution 8 oz. pH measuring equipment must be cleaned and calibrated regularly to ensure accurate readings High accuracy (0. 01 pH): standardized against NIST Certified pH references within 0. 01 pH at 25˚C (77˚F). ideal for the calibration of all pH meters Color-coded, double-sealed, 1-year shelf life Expiration date and temperature/ph reference chart provided for reference Non-hazardous product Calibration Solution should be stored in a cool place out of direct sun and heat

    $28.99$27.25

  • Sale -20% GroStar GS2-E replacement Soil Spear pH electrode Hydroponic Center GroStar

    GroStar GS2-E replacement Soil Spear pH electrode

    GroStar GS2-E replacement Soil Spear pH electrode Product Details AI58020 - GroStar GS2-E replacement Soil Spear pH electrode Spear pH Probe measures pH and temperature in nutrient solution, soil, coco coir, rockwool, and many other media types Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance Impact-resistant spear glass tip, 10 times stronger than conventional glass bulb PTFE ring prevents a clogged junction caused by soil particles, significantly increases durability Backed by Apera's Swiss LabSen proprietary sensor technology 1-year warranty

    $181.99$145.59

  • Sale -3% Autopilot Analog Grounded Timer, 1725W, 15A, 15 Minute On/Off, 24 Hour Autopilot

    Autopilot Analog Grounded Timer, 1725W, 15A, 15 Minute On/Off, 24 Hour

    Using an analog timer to automate your lighting adds convenience and encourages productive growth with consistent hours of light. Timers are also essential for many hydroponic system applications. Features 15 minute on/off 15A/1725W Great for lighting, pumps, etc. Includes convenient clam shell packaging UL-listed

    $16.69$16.21

  • Sale -6% GroStar EC Calibration Kit (2.77 EC, 8 oz. each) Hydroponic Center GroStar

    GroStar EC Calibration Kit (2.77 EC, 8 oz. each)

    GroStar EC Calibration Kit (2.77 EC, 8 oz. each) Product Details GroStar by Apera EC Calibration Kit (2.77 EC, 8 oz. each) 2.77 EC conductivity standard calibration solution Used as a reference or checking solution to ensure you have adequately cleaned the EC/ppm probe Calibration Solution should be stored in a cool place out of direct sun and heat. Non-hazardous product Please keep out of reach of children  Made in USA

    $14.99$14.09

  • Sale -6% GroStar pH Probe Maintanence Kit Hydroponic Center GroStar

    GroStar pH Probe Maintanence Kit

    GroStar pH Probe Maintanence Kit Product Details All-in-one maintanence kit provides everything you need to maintain, clean and store your GroStar pH probe   Kit Includes:  3M KCL storage solution (4oz.) Cleaning solution (8oz.) CalPod solution organizer Probe cleaning brush Wash bottle

    $23.99$22.55

  • Sale -10%