Electronic Equipment Surge Protector (610-2133) Features Faxback Doc. # 19670 * Detects and protects against a power surge of up to 6,000 Volts and 19,500 Amps in 1 nanosecond (1 billionth of a second). * Protects connected equipment from surges of up to 210 joules. Your Radio Shack Electronic Equipment Surge Protector protects your valuable equipment from damage caused by sudden increases in electric power from inside or outside your home. Your surge protector absorbs these spikes and surges (such as those which occur when you switch air conditioners, refrigerators, and other major appliances on and off). It also improves the performance of connected equipment by filtering electromagnetic and radio frequency interference. CAUTIONS: This surge protector is not a lightning arrestor and might not protect against lightning-induced voltage surges. Be sure the combined wattage of all connected devices does not exceed 1,800 watts. (EB 2/21/96)