Description
25x32x1 MERV 12 AC Furnace Filters 6 Pack Grow Light Ballasts Automatic Shut Off The meter Automatic Shut Off The meter can be set to automatically turn off after 8 minutes or 60 minutes to conserve battery life in the event that the meter is left on and carries a 0 day Pre Harvest Interval — making it one of the most grower friendly biocontrols on the market