Power disturbances damage air conditioner compressors without warning. Let the Compressor Defender by Intermatic 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 on an outdoor compressor. LED indicators provide real-time status updates for quick and easy troubleshooting. Compliant with AHRI Standard 110-1012 Range B2 for voltage drop protection. Specifications: 120-240 VAC Single Phase 60 Hz | Normally Closed Relay 24 VAC | Type 2 SPD | Control Output Current Rating: 2A @ 24 VAC, isolated N.C. contact | Voltage Protection Rating: L-N/G: 700, L-L: 1200 | Nominal Discharge Rating: In (10 kA) |Max Continuous Over-Voltage (MCOV): L-N/G: 150V, L-L: 300V | Short Circuit Current Rating: 20kA | Under-Voltage Response Time: 3 line cycles |Operating Temp: -40°F to 158°F (-40°C to 70°C).