Tjernlund 950-8804 UC1 Circuit Board Replacement circuit board for UC1 Interlock Controls. Product Specifications BRANDTjernlund LENGTH INCHES4-3/4 WIDTH INCHES3-1/4 HEIGHT INCHES1-3/4 COLOR FINISHGreen VOLTAGE120 PHASE1 HERTZ (HZ)60 AMPS0.5 FOR USE WITHUC1 Interlock Controls LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBER950-8804 WEIGHT LBS0.7