... distance (RJ-45/RJ-11/BNC2.7 Convenient battery access2.8 Built in battery access2.9 LEDs indicate connections and faults2.10 ... Connection , Shorts, Opens, crosses.3.3 Low battery Indicator: LED lights to indicate low battery.3.4 Case Dimensions: 7.25×4.0 ... informing the user that Power is turnedon, and that the battery is good(or bad).8 additional connection LEDs light to ...