3-zone power supply, 3 digital temp controllers, on/off circuit breaker, digital dial calibrated for platinel ii thermocouple, temp range 200-1200 degrees c; adjustable proportional band, 4-40 degrees c; automatic reset, 1-10 min/reset; max furnace load 70 a; 120/240 vac, single phase, 50/60 hz; 31.5 in. W, 9 in. H, 19.5 in. D
