This three-zone temperature control unit features three independent PID-autotune zones of control with set-point stored in nonvolatile memory (retains settings if power is interrupted). It has a tri-color LED status light for each zone. Includes screw terminals for heater power and RTD sensor input. Dimensions (H x W x D): 4.5 x 1.8 x 3.9in (115 x 45 x 99mm). Power Supply: 240V. Amperage: Up To 5A. BriskHeat® #: C2STACK-CR.