This is a Sollatek FridgeGuard voltage protection device designed for appliances like refrigerators and freezers.
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Protects Against Fluctuations: It safeguards appliances from voltage surges, spikes, and brownouts (under-voltage).
Automatic Reconnection: If power goes out or fluctuates, the device disconnects the appliance and automatically reconnects it once the voltage stabilizes, typically after a 3-minute delay to protect the compressor.