PRODUCT DESCRIPTION Our network cable tester and tone tracer kit is widely used in telephone system, computer network, metal wire line inquiry & daily maintenance work to test cat5e, cat6e and telephone wire for Breakpoints, open circuits and short circuits. It features earphone and spotlight function, low battery indication and an anti-Interference design. FEATURES - Unique data transmission technology - Anti-Interference design - Network wire sequence collation - Breakpoints check - Open circuit or short circuit testing - Telephone wire finding - Network wire finding - DC level testing - Low battery indication - Earphone and spotlight function - Good helper for communication line installation & maintenance engineers - Widely used in telephone system, computer network, metal wire line inquiry & daily maintenance work - With LED light & earphone, suitable to use in dark & noisy environment