Suppressor. It is a device designed to protect refrigeration appliances and other motor equipment from power fluctuations.
It provides protection against high voltage, low voltage (brown-outs), voltage dips, and power-back surges.
The current rating is 13 Amps, suitable for most domestic appliances.
It features an automatic power cut-off and an intelligent delay mechanism to ensure the appliance is not switched on-off repeatedly during fluctuations.
The device uses LED indicator lights to show the power status.