The Pro-Leaf PPM-B1, digital CO² controller, provides simple and precise control of a 240 Volt CO² generating device with modes for both increasing and decreasing CO².

Also featuring fuzzy logic operation which offers additional accuracy when utilizing CO² supplementation.

Adjustable set points range from 400-2000 parts per million with an accuracy of +/-100 PPM and an adjustable deadband.

A remote sensor with 4.5 m cable, accurately monitors the garden’s PPM levels and relays this information to the controller for display in real-time.

An integrated photocell allows for day, night, or continuous operation and the unit records maximum and minimum values for later viewing.