1. Versatile Voltage Detection: ANENG B19 offers both non-contact (30-1000V AC) and contact (11-450V AC) voltage measurement capabilities, ensuring comprehensive testing options. 2. Smart Alert System: Features a color-changing backlit display and audible alarm for instant voltage detection feedback, enhancing safety and ease of use. 3. Live Wire Identification: Accurately distinguishes between neutral and live wires based on electric field strength or voltage level, crucial for electrical work safety. 4. Intuitive Field Strength Indicator: Three-level scale displays weak, medium, and strong electric fields, providing clear visual feedback on voltage intensity. 5. Energy-Saving Auto-Off: Automatically powers down after 3 minutes of inactivity, preserving battery life for extended usage periods. 6. High Safety Standards: Complies with CAT II 1000V and CAT IV 600V safety ratings, ensuring reliable protection during high-voltage testing scenarios. 7. 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. 8. Package included: 1 x Voltage Tester; 1 x English User Manual.