Titan Controls® Kronus 4 Dig Rem Temp, Hum, CO2, Day/Night Controller This product controls temperature, humidity and CO2 in you grow area at your preferred daytime and nighttime settings. The built in ten (10) minute ‘CO2 delay’ feature deactivates CO2 equipment if day temperature or humidity setting is exceeded by using a digitally based control system. The software polls the temperature and humidity setting ten (10) minutes after the CO2 outlet is defeated to verify that the temperature or humidity is too high, and then activates your exhaust fan or A/C to lower the conditions under your settings. If the temperature drops below the set point during the ten (10) minute ‘CO2 delay’, then the exhaust or A/C process is defeated and the ‘CO2 ON’ outlet is reactivated saving your valuable CO2 and keeping it amongst the plants where it belongs. The ‘Night Only’ and ‘Night Heat’ outputs provide a nightlight or exhaust fan and heat for your enclosure during the nighttime period. This provides the customer with 24 hour temperature and humidity control in their garden. The Kronus 4 activates an exhaust fan or A/C or if the temperature or humidity exceeds the preferred settings. The ‘CO2 ON’ feature is only activated during daylight periods to dose CO2 when your plants are able to uptake it and is disabled during the nighttime hours or when the humidity or temperature exceeds the preferred settings. Plug your exhaust fan or A/C into the ’Exhaust Fan Output’  and plug your CO2 tank with emitter system or CO2 generator into the ‘CO2 Output’ and your daytime conditions are under control. For nighttime conditions, you can plug a nightlight into the ‘Night Only Output’ so you can work in your garden after hours. The ‘Night Heat Output’ is used to plug a heater into to keep your plants from getting the night chills. The Kronus 4 gives the expert gardener the top shelf controller they’re looking for to maintain their garden! Controls CO2, DAY/NIGHT temperature and humidity in your garden. Activates "CO2 ON’ outlet only during daylight hours. Ten (10) minute ‘CO2 delay’ feature allows maximum CO2 coverage with minimum CO2 waste. Features a ‘Night Only’ and ‘Night Heat’ outputs to assist the gardener with the maintenance of the garden after the lights have turned off. Easy to understand. Highlighted ‘Grow Zones’ for ease of use. 25 foot modular remote temperature and humidity sensor. Only the highest quality components are used. Improves your yield by creating the perfect environment for your plants. Controllers designed by our industry, for our industry. 15 Amps/120 Volts/60 Hz. 3 year warranty. MSRP: $399.95