Main Features:
● Measure open circuit， short circuit， jumper wire， reverse connection or cross-talk interference. Check wiring error in 5E， 6E， coaxial cable and telephone line
● Far-end recognizer with prompting voice
● Single board computer software watchdog design and reliable operation
● Power supply by 4 x AAA batteries(battery is not included)
● For an economic use of battery， the tester will shut off automatically if it does not work for 30 minutes in succession
● Length calibration: User can set calibration factor by himself with a given length cable. the length of calibrating cable is more than 5m
● Tester and wiremap ports: Tester RJ45 master port (M)， tester LOOPBACK RJ45 port (L)， far-end recognizer RJ45 port (R)

Notes:
Never attempt to connect and start the tester with any power supply other than the tester itself!