You can not beat the quality of the PRO220K! The housing on the Tone Generator and Probe is constructed of a thick high density plastic that is sealed with a heavy duty gasket. These units are water resistant and virtually indestructible. This is by far one of the nicest Tone & Probe Sets we have come across at Tech Tool Supply, not to mention it's amazingly low price!
This Tone & Probe kit is great for Cable installers, Satellite Installers, Alarm Techs, and virtually any other installer. The PRO220K is perfect for mapping wire and cable, tracing a wires path, and even finding wires hidden in the wall!