New wireless temperature sensors eliminate the time needed to install wires to attach the sensors to refrigeration systems, says the company. The sensors operate with a Johnson Controls/Penn refrigeration system controller. The wireless system includes a transmitter, temperature sensor, and receiver. The sensor is positioned in a case or walk-in and connected to a lithium battery-operated transmitter attached to the side of the unit. The transmitter sends a signal to the receiver located near the rack controller. The receiver then converts the signal for the controller. Johnson Controls, Inc., P.O. Box 423, Milwaukee, WI 53201; 800-715-5040; 414-347-0221 (fax); (website). eProduct #185 at

Publication date: 09/04/2000