177-103, Gefran, Gefran 2500 PID Temperature Controller, 96 x 96 (1/4 DIN)mm, 100 V ac, 240 V ac Supply Voltage, Brand Gefran, Supply Voltage 100 V ac, 240 V ac Gefran 2500 PID Temperature Controller, 96 x 96 (1/4 DIN)mm, 100 V ac, 240 V ac Supply Voltage