• high test current up to 80ma yielding resolution of 0.001ω on 2ω range. • advanced filtering method (based on fft fast fourier transform) reduces noise interference for obtaining stable measurements. • automatic and manual selection of the test current frequency in four bands (94/105/111/128hz). in automatic mode, kew 4106 will select the most suitable frequency. • several sub-results can be shown on the display: resistance of the auxiliary earth spikes, frequency of test current, voltage and frequency of interference (noise), residual resistance rk, etc. • warning for excessive noise and high auxiliary earth spikes resistance. • large graphic display with backlight for readings in poorly illuminated areas. • up to 800 measurement results can be saved in the memory and recalled on the display. • the stored results can be transferred to a pc using the ''kew report'' software and a usb adaptor (model 8212-usb) which are included. • robust design with ip54 protection.