It has the state-of-the-art circuit testing functions including length test, cable line finding, line-to-line, crosstalk and breaking point. Excellent in verifying the LAN cable condition, Wire Hunting, and comes with LED spotlight for dark areas testing. The 8 remote units (wiremaps) enable testing 8 cables simultaneously. Specifications: Testing/Detecting cable types: STP/UTP 5E, 6E network cable, telephone cable, coaxial cable, USB cable and common metal wires connected with alligator clip Length measurement: calibration precision: 2% (+/-0.5m, or +/-1.5 feet; cable >10m) measurement precision: 3% (+/-0.5m, or +/-1.5 feet; AMP, CAT5E, 6E cable material) Display Unit: meter, feet, yard Transmitter: LCD screen: 50 x27mm Frequency: 1MHz Maximum Distance: Tracing cable: 3000m (for electrified wire)/ 2000m (for non-electrified wire) Cable mapping: 2500m Cable length testing: 1000m Trace cable connected to switch: Anti-jamming Tone mode: 2 Tones, adjustable Compatible with connectors: RJ11, RJ45, BNC, USB LED lights display: wiremap, tone, tracing Cable map indication: LCD (Pin 1-Pin 8) Shielded indication: LCD (Pin 9) Voltage protection: AC 60V/ DC42V Low battery display: LCD (6.5V) Power supply: 1 x 9V battery Dimension: 185 x 80 x 32mm Receiver: Tone Frequency: 600Hz/ 1.2KHz The max working current: Less than 70mA Earphone jack: 1 LED illumination: 2 LEDs Power supply: 9V battery Dimension: 218 x 46 x 29mm Remote adaptor Remote identifier: 8 pcs Compatible connectors: RJ11, RJ45, BNC, USB Dimension: 107 x 30 x 24mm Set Includes: 1 x Emitter 1 x Receiver 8 x Remote adaptor 1 x Earphone 1 x RJ11 Telephone cable adaptor 1 x RJ45 Network cable adaptor 1 x RJ11-to-Alligator clip cable adaptor 1 x English Manual 2 x 9V battery 1 x Carry pouch