TrolMaster Hawkeye Temperature, Humidity & CO2 Monitor (CM-1)TROLMASTER HAWKEYE TEMPERATURE HUMIDITY & CO2 MONITOR The Hawkeye from TrolMaster provides an economical and accurate method to monitor an enclosed space. Some users simply need to monitor the temperature, humidity and CO2 and VPD levels without the need to actually control any devices. The CM 1 Hawkeye is designed specifically to be used as a back up monitoring system to ensure environmental conditions stay within acceptable limits. The Hawkeye comes