3.5" TFT color LCD display with 320x240 pixels Fast high current loop test. Variable RCD current mode for customized settings PASS/FAIL indication for RCD tests. Select voltage measurement between L-N, L-PE and N-PE Support SD memory and USB and Bluetooth interface. Internal Memory Safe Earth Volt Touchpad detects raised earth voltages >50 V, indicating potential dangerous situations.. Slim probes designed with test button For easy, always reliable and accurate compensation of test leads and mains cords.