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Climate Control & Timers 

Air-1 Temperature/Humidity 

Rated for 10 amps @ 120 volts. The AIR-1 allows you to control the temperature and humidity within your growing environment. Connect your ventilation equipment (air conditioner, fan, etc.) to the exhaust outlet. Then set your temperature and humidity to the level that you wish to maintain. If either level is exceeded, the exhaust outlets are activated to reduce heat and humidity.

Rated for 10 amps @ 120 volts. 

The AIR-2 has the same features as the AIR-1 with the exception of separate temperature and humidity outlets. This allows you to control the temperature and humidity independently. Once you have connected your temperature control device (air conditioner, fan, etc) and a dehumidifier to the AIR-2, your desired temperature and humidity are automatically maintained.

Rated for 10 amps @ 120 volts. 

The AIR-3 expands our line of atmospheric controllers by providing the ability to coordinate supplemental CO2 with your ventilation equipment. The AIR-3’s operation is similar to the AIR-1, with the addition of a photo cell and CO2 outlets. The photo cell ensures that your CO2 device (CO2 valve or generator) only activates when your lights are on. To conserve CO2, the CO2 outlets are automatically disabled while your ventilation equipment is running.

Rated for 15 amps @ 120 volts.

The AIR-4 has all the features of the AIR-3 with the addition of independent temperature and humidity controls. It also has an increased power capacity to control up to 15 amps of equipment. An additional outlet is provided which will power equipment only during the ‘day’ cycle. Features include independent temperature and humidity control, coordinated CO2 sequencing and an additional outlet that is powered only while the lights are on.

Bottled-CO2-regulator-SolenoidBottled CO2 regulator &Solenoid #879

Green Air Products bottled CO2 emitter systems combine a forged brass flow gauge regulator with a UL/CE/CSA certified emitter solenoid valve. These systems offer a flow range from 7-20 SCFH. The BCDE systems come with 10 feet of clear tubing with spring clamps, a grounded 6ft 120 volt power cord.

CO2- 2 Temperature, Humidity & CO2 Control #212

Rated for 15 amps @ 120 volts. The CO2-2 has two timers that are used to add just the right amount of CO2 without the wasteful “overshoot“ that other controllers have. One timer controls the length of time the CO2 is released and the other controls how often the CO2 is released. The result is a very efficient method of controlling CO2. It also features temperature and humidity controls which will disable CO2 injection if the temperature or humidity levels that you specify are exceeded, activating an exhaust outlet which can control ventilation equipment (air conditioner, fan, etc.) It also has a built in photo controller, which disables the CO2 function when the lights are off. The CO2-2 can be converted to PPM level accuracy with the addition of the PPM-1c CO2 sensor.

CO2- 4 Temperature, Humidity & CO2 Control #2120

Rated for 15 amps @ 120 volts.  The CO2-4 has four timers that are used to control your CO2. In addition to all the features of the CO2-2, the CO2-4 adds two additional internal timers. The “Overall Cycle timer“ allows the user to decide how long the supplemental CO2 is kept in the growing area prior to being exhausted. When the “Overall Cycle“ time expires, the CO2-4 turns ON the exhaust outlets and enables the “Exhaust Cycle Timer“, which controls the amount of time the exhaust fans will run. When complete, the cycle is reset and the CO2 cycle starts again. The CO2-4 can also be used with the PPM-1c sensor for unequalled Parts-Per-Million performance.


CO2/ PPM (Parts Per Million) Monitor / Control #216

The PPM-3 from C.A.P. is the most affordable and simple CO2 controller available. Its’ proven technology is very accurate at measuring levels of Carbon Dioxide in your growing area from 0 to 5000 ppm (Parts-Per-Million). Using the PPM-3 is quite simple. Just plug your CO2 device (CO2 valve or generator) into the “piggyback“ cord and it will automatically maintain the CO2 level that you specify. The PPM-3 works with any make of CO2 valve or generator that is 120 volt.

CO2/PPM (Parts Per Million) Monitor (Integrateable Option) #215

The PPM-1C is an extremely accurate Carbon Dioxide/CO2 sensor. It measures the exact level of CO2 in your growing area and displays this value from 0 to 5000 Part-Per-Million (PPM) on its digital readout. Even though the PPM-1c is not realized until it is connected to one of the three controllers C.A.P. has designed to work with it. When the PPM-1c is connected to either the CO2 -2, CO2 -4 or CGC-1 controller, it commands the controllers to release or produce more CO2 only when required. The timers built into the environmental controllers continue to coordinate with the PPM-1c to give you the precision control not possible with other manufacturers’ CO2 control systems using only ON/OFF control. The user enters the exact level of CO2 they want to maintain (usually 1500 PPM) and enters that value directly into the PPM-1c. The PPM-1c works with any 120-volt CO2 valve or generator that is 120-volt.

Complete Greenhouse Controller #2160

The CGC-1 Complete Greenhouse Controller controls all of the main devices required in today’s modern hydroponic garden. Your garden’s HID lights are controlled by a precision 24-hour time clock. Two outlets are provided for your lights. Other functions such as supplemental CO2 and hydroponic pumps are also coordinated with the time clock. Two of the outlets on the CGC-1 are for your exhaust fans or air conditioner. A built-in thermostat and humistat handle the growing area’s temperature and humidity control functions. The two pump outlets allow your water pumps to be controlled by the built in Adjustable Recycling Timer. A selector switch allows the user to determine if the hydroponic pumps are to cycle only when the lights are ON or 24 hours a day. An auxiliary NIGHT outlet is activated when the lights are turned off. It is perfect for controlling humidity at night using a dehumidifier or for a separate heater. Supplemental CO2 is coordinated to work in harmony with your exhaust fan’s temperature and humidity control functions. When the exhaust fans are running, the CO2 outlet is disabled to conserve CO2. Two standard built in timers control your CO2 valve or generator. The CGC-1 can be upgraded to Part Per Million accuracy by plugging in the PPM-1c CO2 monitor. The CGC-1 is rated for 15 amps @ 120 volts.

REG-1-CO2-Regulator-and-ValveREG-1 CO2 Regulator and Valve #8790

CAP’s CO2 Regulator assembly combines a precision regulator/ flow gauge and an industrial solenoid valve. The flow gaugecan be set from .5 to 15 SCFH. Designed to work with any 120 volt control device. Complete with 6 foot power cable and 10
foot of 1/4″ air line.


CAP’s dual-tank CO2 regulator assembly combines a precision regulator / flow gauge and an industrial solenoid valve. The unique ability to connect the REG-2 to TWO tanks of compressed CO2 allows double the run time between changing out the tanks. The flow gauge can be set from .5 to 15 SCFH. Designed to work with any 120 volt control device. Features a tank pressure gauge to indicate remaining tank pressure. Complete with 6 foot power cable and 10 foot of 1/4″ air line.

XGC-1 Xtreme Greenhouse Controller #217

Control ALL your equipment from ONE compact, reliable controller! The XGC-1 is the best all in one controller ever made. The specifications of the XGC-1 are identical in every way to the CGC-1, except for the addition of Fuzzy Logic(tm) CO2 control built in! Fuzzy Logic(tm) can be compared to a good driver. As a good driver approaches a red light, he or she applies the brakes to gradually slow down BEFORE getting to the intersection. Fuzzy Logic(tm) uses the same idea to keep the CO2 level at your desired setting, without going over the set point.