Designed specifically for the CATV industry, the Model 402K will send tone through any passive device along the cable path. Now you can tone through splitters, directional couplers and traps. As a continuit tester, the 402K provides both audible tone and LED display to indicate resistance levels. The unit will even identify the presence of AC or DC voltage on the cable under test. Each kit consists of: One transmitter, one receiver, one male "F" to "F" connector adaptor cable, one male "F" to alligator clip adaptor cable, and a durable woven polyester carrying case. Power requirements: Two 9V batteries (#292-035) not included. Mfr. #402K.