511-8904, CAL, CAL 9300 PID Temperature Controller, 48 x 48 (1/16 DIN)mm, 2 Output Relay, SSD, 12 → 24 V ac/dc Supply Voltage CAL 9300 PID Temperature Controller, 48 x 48 (1/16 DIN)mm, 2 Output Relay, SSD, 12 → 24 V ac/dc Supply Voltage