It protects against under-voltage and power-back surges by disconnecting the power when it goes below an unacceptable level.
The device automatically reconnects power once the supply has stabilized after a pre-set delay, which protects the compressor from repeated on/off cycles.
Some models feature iSense technology, allowing control over the sensitivity to voltage problems.
The TimeSave function in the iS range ensures maximum operation time by reducing the reconnection delay if the power has been off for more than 3 minutes.
The Guards are designed to protect appliances up to 6 Amps.