HUMIDITY SENSOR (Model HUM-1) Used to control the vent fan when plugged into the Plant Pro controller, this Integrated circuit humidity sensor is more accurate and responsive than the usual mechanical sensors typically found in the grow room environment. Accuracy is further enhanced by freedom of placement allowed by the supplied 10 ft. cable. The desired humidity level is selected on the Plant Pro controller. During operation, the controller can be set to display the actual room humidity for easy monitoring. Sensor cases have convenient mounting flanges. SPECIFICATIONS Range: 0 - 100% rH Accuracy: +/- 3% Response:15 second time constant Resolution: of 1% rH Dimensions: 2" x 2" x 1 1/2" Back