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Sentinel GPS CPPM-4i Advanced True Fuzzy Logic Compressed CO2 Regulator Enrichment PPM Controller Intelligent + Remote Probe


Sentinel has announced the next evolution in Sentinel Fuzzy Logic CO2 controls – the CPPM-4i. At first look, the CPPM-4i is similar to the CPPM-1 – Identical button controls, layout and color coding make it easy to transition to the new product. However, the similarities end there. The following is a list of improvements and design modifications which are incorporated in the CPPM-4i: Green LED displays – While the prior red displays were not bright enough to cause problems, perception exists that green displays would be more plant friendly…so it shall be. Weather-resistant controller housing – Main controller modules are sealed to prevent moisture and contaminants from entering the units. Removable remote probe assembly – Probe is removable allowing you to place the product in remote locations easier than before. Removable probe also allows you to replace the probe easily if damaged due to user neglect (drop in reservoir, foliar spray, step on it, cut the cord, sulfur damage etc) More powerful CPU’s – Ensures more accurate readings and control – also allows for greater expansion of future software capabilities. Dual beam CO2 Sensor – Highest tech, most accurate sensor available to the hobby hydroponics industry. Perhaps the most important change incorporated into the CPPM-4i and all upcoming new Sentinel products is the Rohs compliant construction. Rohs – which stands for Reduction of Hazardous Substances Act – is a European Consumer Safety law which forbids the inclusion of Lead, Mercury, Cadmium and Hexavalent Chromium in electrical products. It also limits amounts of two commonly incorporated flame retardants in plastics – PBB (Polybrominated Biphenols) and PBDE (Polybrominated Biphenol Ethers).

Product Features

  • Sentinel True Fuzzy LogicTM gives the most precise compressed CO2 regulator enrichment available
  • Time Clock control provides greater user flexibility and control vs. older photocell models
  • Large, pixelated LCD display makes user programming intuitive and simplified
  • Remote Sensor is 15′ (5m) expandable up to 160′ (50m) accommodating a wider range of growing environments
  • RoHS compliant construction for environmental friendliness
Price: $478.39          Buy Now


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