Autopilot CO2 Replacement Sensor w/15' Cable (for APC8200) They can be located outside

They can be located outside the grow room and a run of ducting can be extended from them into the room to extract the air and filter it

This mode allows the user to set an emergency temperature limit that will turn off the CO2 generator until the grow room temperature is reduced by 10°F

Stainless steel mounting screws

This system can be configured for drain to waste or recirculating applications and is suitable for all hydroponic growing mediums as well as organic soil

wear and tear resistant material for cylinder and piston

Autopilot CO2 Replacement Sensor w/15' Cable (for APC8200) They can be located outsideThis is a replacement CO2 sensor for the Autopilot APC8200 Remote CO2 sensor probe w photocell & 15' data cable lets you take readings from proper grow room locations 2 Channel Low Drift NDIR Sensor precisely reads CO2 ppm levels