this cable tester may help you to test and detect or scan RJ45,RJ11,BNC,USB port, and can test common line via alligator clip.

SHOMLIN LCD network cable tester SML-8838

     Features and functions

working current: emitter≤20mA,

Power requirement: DC, 9V superposition battery

A.to check various circuit status.B.to judge the connection status.C.to judge the open point.D.to check the Crosstalk issue.

E.to test the length of cable.

1.With M-S and M-R two methods to check error such as open, short circuit, jumper, reverse,

   crossover, matching connections and cable break point for    5E/6E cable, BNC cable,

USB and phone line and visually displays on the LCD

2.To test crosstalk error on cable to shut out the potential issue of slow network speed.

3.With the M-S, M-R, OPEN three methods to measure the cable length up to 1,200 meters for

   network cable, coaxial cable, telephone line, USB cable. The accuracy of the measurement of

   length and location of cable break point is up to 98%.

4.Can determine which side is open between two cables ends tested, and accurately determine

   the exact open point in the cable end (left,  right or middle).

5. With a low voltage display when voltage is low,

6. Automatically shut-off while time-delay.

7. With a self-test and adjust functions to various conditions.

8. Can test the connection between network cable and router is good or not, and router can be

   live tested.

Shomlin LCD network cable tester SML-8838