500w = small power — best for low power electronics
can protect:
• tv (32" - 55" led)
• decoder / dstv / startimes
• woofer / home theatre
• router / computer / laptop charger
• phone chargers, lights
cannot protect:
• fridge — no (needs 1000w minimum)
• freezer — no
• microwave — no
• big woofers with amplifier — no