Increased Efficiency: Built-in high-brightness LED flashlight Time saving: Quick voltage check thanks to non-contact measurement Increase your flexibility: The voltage tester covers a wide voltage range from 12 to 1000 V AC Increased efficiency: Can be used worldwide thanks to measuring tip suitable for all socket outlets worldwide Before starting an electrical installation, electricians must verify that the working environment is voltage-free To test alternating electric fields or to locate suspected sources of error, a phase tester is required An initial indication of the absence of voltage can be obtained thanks to the optical and acoustic signal of the Wiha contactless phase tester After switching on, the steady green LED indicates that the appliance is ready for use When checking the voltage, the LEDs light up from blue (weak) to orange to red (strong) depending on the strength of the alternating electric field Two AAA batteries are required for use and are supplied If the tester is not used for more than 4 minutes, it switches off automatically to save energy An integrated LED torch allows the measurement points to be illuminated in dark environments and can also be used as a torch by manual switching on and off Thanks to its handy size, the phase detector with clip easily fits into every shirt and trouser pocket Thanks to the suitable measuring tip for all socket variants, the phase tester can be used worldwide The single-phase voltage tester is subject to EN 61010-1 / IEC 61326 and is designed for CAT IV 1000 V AC In addition, the tool is approved according to ATEX for potentially explosive areas (Category II) Before and after each use, test the voltage tester with a known voltage source to ensure proper operation