623-3903, West Instruments, West Instruments P8100 PID Temperature Controller, 96 x 48 (1/8 DIN)mm, 1 Output SSR, 100 → 240 V ac Supply Voltage West Instruments P8100 PID Temperature Controller, 96 x 48 (1/8 DIN)mm, 1 Output SSR, 100 → 240 V ac Supply Voltage