Continuity tests of coaxial cables with bnc connectors and 8-pole data lines with rj-45 connectors installed. The device recognizes open and short circuited connections (wire/cable or wire/shield). A two-line display (leds) indicates sequentially which pin of the rj-45 connector at the end a of the cable the pin at the end of the wire b is connected and manual or automatic advancement of the switch is possible; in the case of a short circuit, more than two LEDs are simultaneously turned on. The device has 2 rj-45 outlets; with the supplied remote kit the cables placed on the wall can also be tested. Two adapter cables (BNC/RJ-45) are supplied for testing coaxial cables. poe check - the poe finder allows the network administrator to find out if a network cable is supplied via poe. Simply connect the network cable you need to test. The LED of the poe finder will glow if the cable is supplied with power. Battery (not included in delivery): 1x E-Block 9V (6LR61/AM-6).