Harvest-Master® Relays vs EVC-2 Environmental Controller vs

Hydro HPH-4 High Power HID Controller | iGS CO2 Control w Auxiliary Shut Off Output [model iGS-100] | iGS CO2 Control w High Temp Shut Off Function [model iGS-061] | iGS Plug-In Manual Variable Speed Control [model iGS-070] | 30 and 50 Amp Power Cords | Air Conditioner | Automatic Dialer & Movement Detector Alarm Model iMS 100 | C02 Generators with LP Rated Hoses | C02-EXP C02 Expansion Regulator | C02-REG C02 Regulator | CHHC-1 Total Environmental Controller | CO2 300 Carbon Dioxide Controller | CO2 Detector Tubes | CO2 Test Kit by Control Wizard | COOL-1/Cooling Thermostat | CPPM-1 C02 Controller with Photocell | DRT-1/Digital Recycling Timer | EVC-1/Environmental Controller | EVC-2 Environmental Controller | Flood Detector | Gas Meter | Green Air 12 Volt AC/DC Adaptor | Green Air 4 Light Timer - 120 volts [model LT4-120] | Green Air 4 Light Timer - 240 volts [model LT4-240] | Green Air 8 Light Timer - 240 volts [model LT8-240] | Green Air Bottle CO2 Regulator & Solenoid [model BCDE-1] | Green Air CDDS-2 & CDM-6000 Sensor [model CDMC-6] | Green Air Chronometric Sequential Timer [model CST-1] | Green Air CO2 Set Point Controller [model SPC-1] | Green Air Independent Cooling & Heating Thermostat/4 0utlet [model CT-HT-2] | Green Air Integrated Cooling Thermostat & Dehumidistat/4 Outlets [Model CT-DH-1] | Green Air Repeat Cycle Timer [model CYCLESTAT 4P] | Green Air Replace. CO2 Hose - use w/all Green Air Generators | Green Air Synchronized Cooling Thermostat/Dehumidistat/4 Outlet [model CT-DH-3] | Green Air Tempstat Thermostat 3F - Heating & Cooling [model H/C-3] | Green Air Total Humidity Controller - Humidify & Dehumidify [model THC-1] | Harvest-Master® Climate Controller | Harvest-Master® Climate Pro Plus Controller | Harvest-Master® CO2 EASi Units | Harvest-Master® Relays | Harvest-Master® Text Me Modem | HPH-8 High Power HID Controller | Hydrogen CO2 Monitor | Hydrogen Water Cooled CO2 Minigen Generator | HydroGen Water-cooled CO2 Generator and Valve | IGS CO2 Generators | IGS CO2 Generators with Heat Exchangers | iGS Cycle Timer with Photocell [model iGS-011] | iGS Day & Night CO2, Rel Hum & Temp Smart Control [model iGS-220] | iGS Day & Night Cooling & Dehumidifying Control w Display [model iGS-040] | iGS Day & Night Humidity Control With Display [model iGS-030] | iGS Day & Night Temperature Control W Display Model iGS-020 | iGS Day & Night Temperature Control [model iGS-021] | iGS High Temperature Watchdog [model iGS-012] | iLS4-240 Lighting Load Switch Box with Internal 0-20 Minutes On Delay 240 volt Outputs | LuxPro PSP300 Programmable Digital Thermostat | MDT-1/Master Digital Timer | Optimum Growth C02 System and Timer | Plant Pro Environmental Controller | Plug-in 12 Amps Off-switched Relay with Low Current 120V Trigger Cord Model iLS120-OFF | PWX Power Expanders | PXM-1 Power Expansion Module 120 Volt | PXM-2 Power Expansion Module 240 Volt | reen Air Microclimate Controller System/8 Outlet [model MCC-1] | Solatel Gas Pro CO2 Generator & CO2 400 Controller | Solatel LP 120S Lamp Pro Timer | Solatel LP 240S Pro Lamp Timer - 240V 30A | Solatel PWX-1 Power Expander (120V 15A) | Solatel PWX-240 Power Expander (240V - 30A) | THP 100 Atmospheric Controller | Titan Apollo 1™ Repeat Cycle Timer with Photocell | Titan Apollo 3™ Fixed Cycle Timer | Titan Atlas 1™ CO2 Controller Monitor | Titan Controls ® Apollo 4 - 120 Volt Inline Timer | Titan Controls ® Apollo 5 - 240 Volt Inline Timer | Titan Controls® Ceto1 Controller | Titan Controls® CO2 Inline Heater | Titan Controls® CO2 Regulator | Titan Controls® Hades 1 - 15 Minute Delay Timer | Titan Controls® Helios 1 - 4 Light 120V Controller w/Timer | Titan Controls® Helios 2 - 4 Light 120V Controller With Relay | Titan Controls® Helios 3 - 4 Light 240V Controller w/Timer | Titan Controls® Helios 4 - 4 Light 240V Controller w/Relay Trigger Cord | Titan Controls® Kronus 2 Dig Rem Temp, Hum, CO2 Controller | Titan Controls® Kronus 3 Dig Rem Day/Night Temp CO2 Controller | Titan Controls® Kronus 4 Dig Rem Temp, Hum, CO2, Day/Night Controller | Titan Controls® NYX 1 Day/Night Photocontroller | Titan Controls® Patch Cords | Titan Controls® Temperature and Humidity Sensor | Titan Controls® Temperature Sensor w/Photocell | Titan EOS 1™ Humidity/Dehumidify Controller | UTC-1/Universal Temperature Controller | Variable C02 Generators |