METRALINE RLO/CHECK. Digital low-resistance measuring device in accordance with EN 61557-4 / VDE 0413-4 with cable drum and 30m cable for measuring the resistance of protective conductors and equipotential bonding conductors. The Metraline RLO-Check is a digitally displayed low-resistance measuring device for the safe testing of line resistances of up to 20O in electrical systems with nominal voltages of up to 500V. Metraline RLO-Check is suitable for the quick and safe testing of larger protective conductors, earthing and equipotential bonding conductors, as well as shielding and lightning protection systems. The measured value is shown on the red (poor) or blue (good) backlit digital display. In addition, a value <1O can be signaled with a buzzing tone. . Battery-operated low-resistance measuring deviceCable drum with 30m cable includedAutomatic polarity reversalAcoustic alarmOptical alarmMeasurement lead compensationOne-button operationManual calibration . METRALINE RLO-CHECK is a measuring device for checking the continuity of protective conductors and equipotential bonding conductors. . . 1 measuring device 4 batteries (AA) 1 lap belt 1 cable reel with 30 m cable 1 test probe with protective cap 1 crocodile clip 1 spiral measuring cable 1 PE adapter for sockets 1 short-circuit shunt (0 O) 1 calibration shunt for continuity threshold (1 O) 1 operating manual 1 test certificate