Power disturbances damage air conditioner compressors without warning. Let the Compressor Defender take the hit so air conditioners are never interrupted. The all-in-one Compressor Defender device protects compressors and circuit boards in residential and light commercial applications from brownouts, surges, and short cycles. The protective device can be installed inside a condensing unit, or externally on an AC disconnect. It is compliant with AHRI standard 110-1012, and comes with a 3 year / $7,500 connected equipment warranty. Features Surge, brownout, and short cycle protection with 120, 208, and 240 VAC loads, LED indicators provide real-time status updates for quick and easy troubleshooting, complies with ANSI/AHRI Standard 110-2012 Range B for voltage drop protection, auto-sense voltage technology 120-240 VAC universal input voltage and meets ANSI/UL 1449 3rd edition requirements.