The Amprobe LAN-1 LAN cable tester is a circuit tracer that locates and traces data cables and connectors to identify shorts, miswirings, and open circuits. The tester evaluates most common cable types, including 10/100 base-T, 10 base-2, RJ45 modular, AT&T 258A, EIA/TIA 568A/568B, and Token Ring cables and RJ45 and BNC connectors A buzzer indicates an error in the cable. The tester evaluates cables up to 300m long. Eighteen red and green LEDs indicate the source or test and Loopback and Remote Tests can be performed. The unit is powered by one 9V battery, which provides power for up to 20 hours of tests. The LAN-1 is designed for use by electricians and electrical contractors. Specifications Power supply (1) 9V battery (included) Cable types 10/100 base-T, 10 base-2, RJ45 modular, AT&T 258A, EIA/TIA 568A/568B, Token Ring cables Cable connector types RJ45 and BNC Maximum line length 300m Weight 0.6 lb./1.26kg Dimensions 5.1 x 2.2 x 1.5 in./130 x 56 x 38mm (H X W x D)H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back. Circuit breaker tracers identify and locate the correct circuit breaker for a particular electrical outlet. The tracers usually include a transmitter, which plugs into the outlet that is being tested, and a receiver, which is a handheld device used to identify the proper circuit breaker in the fuse box. The correct circuit breaker is indicated by LED lights. These tracers may have automatic or manual sensitivity adjustment for use on different kinds of circuits. Breaker tracers may also include additional features, like non-contact voltage detection, which allows it to detect the presence of voltage without being plugged in, and the ability to test ground-fault circuit interrupter (GFCI) and arc-fault circuit interrupter (AFCI) protected circuits. Amprobe manufactures electrical testing equipment for commercial, industrial, and home use. The company was founded in 1948 and is headquartered in Everett, WA.What’s in the Box?LAN-1 LAN Cable Tester(1) Remote terminator(1) RJ45 to female BNC cable(1) RJ45 to male BNC cable(1) RJ45 to RJ45 cable(1) Female BNC to female BNC cable(1) 9V batteries (installed)Instructions