CARMTEK RV Surge Protector 50 Amp – RV Circuit Analyzer with Integrated Surge Protection – Smart 50 Amp Power Defender…

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✔ SURGE PROTECTION – Absorbs high-voltage spikes up to 4200 Joules and protects the RV electrical equipment from dangerous high/low voltage, electrical disturbances, and sudden power surges due to thunderstorms.
✔ CIRCUIT ANALYZER – Allows you to test the quality of your power before connecting your RV, by verifying if the power source is correctly wired and by helping detect most wiring faults. The 50A RV Circuit Analyzer Diagnostic Chart provides fault indication for the following wiring faults: Correct Wiring, Open Ground, Open Neutral, L1-Open, L2-Open, L1-Neutral Reversed, L2-Neutral Reversed, L1-Ground Reversed, L2-Ground Reversed, Open Circuit/No Power.