Features: * Insulated probes avoid short circuits of conductors. * The measurement category includes line tracking, short circuit test, clear/busy/ringing recognition. * For non-terminal cables, the alligator clip mode can be used for direct measurement, and it can also be used for telephone line and network cable measurement. * Optional continuous or pitch shift generator. * There is a built-in speaker on the probe. Specification: Name: Cable Tester Material: ABS + metal Quantity: 4Pcs/set Color: as show Packing Included: 1 x Storage Bag 1 x Cable Tester (2 Parts) (Battery Not Included) 1 x Instruction Manual 1 x Replacement Head Note: 1. Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting. 2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.