• Allows checking cable continuity and locating breaks precisely without damaging insulation. • Multifunctional: ideal for installing, debugging and maintaining telephone lines, network cables and robotic lawn mower circuits. • The transmitter allows selecting single or dual tone modes to facilitate signal localization using the receiver. • Capable of determining the status of an active telephone line: clear, ringing or off-hook. • Compact, lightweight design, dust and shock resistant for safe transport in its included case. • Package contents: 1 transmitter, 1 receiver, 2 x 9V batteries, 1 test lead, 1 RJ-11 connector and 1 carrying case. • Suitable for use by electricians, DIY enthusiasts and robotic mower owners.