User can select one among five preset CO2 control values ( 1000, 1125, 1375 and 1500 PPM ). Day / Night detection to turn off CO2 enrichment during the night. One-button calibration in fresh air ( 400 PPM).
Indoor programmable timer that is the ultimate event planner. Energy saving outlet timer with two grounded receptacles and plug, which allows you to control 2 devices. Ideal for lamps, fans, hydroponics, appliances, electronics, heaters, air conditioners, and more. Control up to 28 on and off settings per day with dusk