Versatile Voltage DetectionANENG B19 offers both non-contact (30-1000V AC) and contact (11-450V AC) voltage measurement capabilities, ensuring comprehensive testing options. Smart Alert SystemFeatures a color-changing backlit display and audible alarm for instant voltage detection feedback, enhancing safety and ease of use. Live Wire IdentificationAccurately distinguishes between neutral and live wires based on electric field strength or voltage level, crucial for electrical work safety. Intuitive Field Strength IndicatorThree-level scale displays weak, medium, and strong electric fields, providing clear visual feedback on voltage intensity. Energy-Saving Auto-OffAutomatically powers down after 3 minutes of inactivity, preserving battery life for extended usage periods. High Safety StandardsComplies with CAT II 1000V and CAT IV 600V safety ratings, ensuring reliable protection during high-voltage testing scenarios. Specifications: AC voltage range: non-contact measurement: 30~1000V; contact measurement: 11V~450V Frequency: 50~60Hz Alarm mode: screen backlight color change + buzzer alarm Identify neutral and live wires: the one with large electric field strength or high voltage value is the live wire Three-grid scale indication: weak electric field; medium electric field; strong electric field Automatic shutdown: It will automatically shut down if it is not used for 3 minutes after power on Safety level: CECAT.II1000V/CATIV 600V NCV voltage detection: yes Digital display backlight screen: yes Battery type: 1.5V AAA battery *1 (not included) Insulated rubber-coated handle: yes Features: NCV voltage detection, Live/Neutral wire identification, Continuity test Package included: 1 x Voltage Tester 1 x English User Manual