UNIVERSAL: Will Work to Protect any Brand of Refrigerators or Similar Appliances. NDICATORS: Green Normal Voltage, Yellow Wait Cycle, Red Voltage Out Of Range. PROTECTS: Electrical Equipment from Low or High Voltage, Electrical Blackouts and Surges. USE: Specially Designed for Refrigerators and Freezers with Mechanical Components. WAIT TIME: After Every Electrical Interruptionn there is a 3 min wait period..