RKC Temperature Controllers Description Over 60 years of experience in temperature control have resulted in this 4-digit-display, double-alarm system, for heat/cool operation, with LBA and HBA alarm, UL and CSA approved. Free selection of thermocouple type. SV and PID operation. Supply voltage: 100/240 V and 24 V. Dimensions: 48x48, 48x96, 96x48, 96x96 mm. Applications Whenever a very high performance, multi-function, totally reliable temperature controller is required.