Check the listing for details. Tempo T-BUG 134A Probe with Case Digital Signal Identifier & Network Tester. Condition: Used. Listed at 25.00 USD. The Tempo T-BUG 134A Probe is a versatile digital signal identifier and network tester designed for cable testing and tracking. This tool, from the renowned brand Tempo, comes with a convenient case for easy portability and storage. With its advanced features and reliable performance, the T-BUG 134A Probe is a valuable asset for professionals in the field of testing, measurement, and inspection in various industrial and business settings. this unit works great but the rubber cover tip has some damage but does not affect its performance.