Concerning this item Four Safe AC Outlets: Use 3-line AC surge protection to shield your pricey home, office, computer, or home theater equipment from damaging surges and power spikes up to 525 joules. Complete Safety: contains or puts out fires brought on by strong surges, cleans power to safeguard data, and absorbs excess energy to prevent electrical damage. SMART DESIGN: When the outlet is not grounded, a sturdy housing guards against shock, fire, and rust with an LED indicator; A floppy power switch keeps your gadgets from unintentionally shutting off; Children are better protected by sliding safety covers. 2-Meter Cord: A sturdy 2-Meter power cord guarantees that your devices receive the best possible power flow while keeping the surge-protected extension cord out of the way.