We offer a complete line of climate controllers specifically designed for greenhouse and grow room applications. These dependable controllers put you in charge of all the conditions critical to a superior growing environment. Depending on the type of controller you choose, you can:
• monitor temperature and humidity
• operate fans, evaporative coolers, air conditioners and heaters
• run humidifiers and dehumidifiers
• coordinate ventilation with CO2 enrichment devices
From sophisticated controllers that read and adjust all climate conditions to simple fan, light, and temperature controllers, our wide selection guarantees you’ll find the right equipment to meet your needs and budget.
CO2 & Atmospheric Controller (AIR-3)
The C.A.P. AIR-3 expands our line of atmospheric controllers by providing the ability to coordinate supplemental CO2 with your ventilation ...
CO2 & Environmental Controller (CO2-2e)
The C.A.P. CO2-2e has two timers that are used to add just the right amount of CO2 without the wasteful ...
CO2 & Environmental Controller (CO2-4e)
The C.A.P. CO2-4e will control the temperature, humidity and CO2 levels within your growing area. It has 4 sequence timers ...
CO2 & Temperature Controller (AIR-3DN)
The C.A.P. AIR-3DN provides the ability to coordinate supplemental CO2 with your ventilation equipment. It features separated day and night temperature ...
CO2 PPM Controller (CPPM-4)$597.50
Are you "guessing" what CO2 level you really have? The CPPM-4 CO2 Controller from Sentinel eliminates guesswork while it controls ...
Complete Greenhouse Controller (CGC-1e)
The CGC-1e Complete Greenhouse Controller from C.A.P. controls all of the main devices required in today's modern hydroponic garden. Your ...
Cooling – Heating Thermostat (THERM-1)$63.00
The Sentinel THERM-1 provides an easy to use and economical way to control the temperature of air, water or soil ...
Day-Night Fan Speed Controller (VSC-DNe)
The C.A.P. Day/ Night Variable Speed Fan Controller (VSC-DNe) is designed to gradually increase or decrease the speed of centrifugal ...
Day-Night Temperature Controller
The C.A.P. TMP-DNe allows you to control the temperature within your growing environment. You can set the day and night ...
Environmental Controller (CHHC-4)$720.00
Welcome to the future... Controlling temperature, humidity and CO2 PPM levels has never been easier. The Sentinel Day/ Night Environmental ...
Environmental Controller (EVC-1)$180.00
Temperature... Humidity & CO2. What do they have in common? They're all environmental conditions inside a growing area that need ...
Environmental Controller (EVC-2)$270.00
Sentinel has combined digital temperature and humidity controls together in one flexible Environmental Controller called the EVC-2. It is EXTREMELY ...
Fan Speed Adjuster$24.50
Infinitely vary duct-fan output with the ActiveAir Fan Speed Adjuster (ACSC). Works with all HydroFarm fans and most others on ...
Fuzzy Logic CO2 Controller (PPM-2a)
Growers who need the absolute best CO2 controller available today, use the PPM-2a from Custom Automated Products (C.A.P.). What sets ...
Harvest-Master Climate Controller$964.50
Take the guesswork out of growing indoors! The Harvest-Master Climate Controller understands the optimum growth conditions for any plant and ...
Harvest-Master Plus Climate Controller$2,143.95
The Harvest-Master Plus does everything the Harvest Master Pro can do with the addition of 8 extra outputs and 8 ...
Harvest-Master Pro Climate Controller$1,644.95
Harvest bigger and healthier crops, more often than ever before! Harvest-Master PRO does everything the Harvest-Master does in addition to monitoring ...
High Temperature Shutdown (HLC-1e)
Protect your crops from overheating! The C.A.P. High Temperature Shutdown constantly monitors your indoor garden temperature. If the temperature exceeds ...
Humidity Controller (HUM-1)
Increase or decrease the humidity levels in your growing area with the C.A.P. HUM-1 Humidity Controller. The unit can be used ...
Ice Box Heat Exchanger$135.00
The Ice Box is a water-cooled heat exchanger that can be used to cool the hot air generated by grow ...
Photo Controllers (PTC-1 & PTC-2)
The C.A.P. PTC series of Day/ Night Photo Controllers are perfect when you need to turn a device ON only ...
All-season temperature control! The DuctStat Plug-In Thermostat will turn a device ON or OFF due to temperature rise/ fall from ...
High humidity levels can cause plants to grow poorly and will encourage disease fungi that can wreak-havoc in your grow ...
Temperature & Humidity Controller (AIR-1)
C.A.P.'s simplest device for temperature & humidity control! The AIR-1 allows you to control the temperature and humidity within your ...
Temperature & Humidity Controller (AIR-2)
The C.A.P. AIR-2 has the same features as the AIR-1 with the exception of separate temperature and humidity outlets. This ...
Temperature-Humidity & CO2 Controller
The C.A.P. AIR-4 Climate Controller has all the features of the AIR-3 with the addition of independent temperature and humidity ...
Universal Temperature Controller (UTC-1)$130.50
The Sentinel Universal Temperature Controller offers a very reliable and inexpensive way to automate the temperature of a growing area. ...
Xtreme Greenhouse Controller (XGC-1e)
The best all-in-one controller ever made! CAP's Xtreme Greenhouse Controller operates all of the main devices required in today's modern ...