BENNING IT 115 TRUE RMS installation tester-Top in price and performance. Technical safety testing of electrical installations according to the construction, change according to DIN VDE 0100-600 or as a regular periodic testing according to DIN VDE 0105-100 can be carried out with the BENNING IT 115 simply and rationally. The measurement functions are arranged clearly and can be selected via rotary switch. In addition to the Testing of FI/RCD protection switch Type AC, A and F with display of the contact voltage, tripping time and the tripping current (ramp method), enables the test device the measurement of low-ohm/insulation resistance, line impedance with voltage drop, loop impedance (with/without RCD tripping), as well as the measurement of rotating field, voltage and frequency. The measurement result is with clearer good/bad display via green/red LED on the test device is visible. The large display of (illuminated) are the measurement result and the test parameters are displayed.