The speaker probe can identify single wires or individual pairs in multiple-pair cables at terminals or closures; identify station wiring or cables to specific equipment in closets or on distribution frames; and identify the ends of drop wires. It can also be used to locate prewiring, or opens in wires, after wall covering is installed.

Designed to get into tight spots with ease, the speaker probe comes with a needlepoint tip and a duckbill tip. The duckbill tip enables insertion into larger cable bundles or cables under tension where slack cannot be obtained.

Normally, with the built-in speaker, a buttset is not required. In noisy environments, use a buttset as a monitor by attaching it to the probes sturdy connecting tabs. Non-locking slide switch prevents accidentally leaving the unit on and draining the battery.