Product Description Product Features: Intelligent Inductive Voltage Tester: Ideal for electrical maintenance on construction sites, it can detect NCV, zero live wires, and electric leakage. 2-in-1 Circuit and Voltage Tester: A multifunctional device that analyzes circuits and tests voltage ranging from ACV: 12-300V. Functions as both a socket tester and a battery tester (1.5V/9V). Battery Voltage Measurement: Simplifies battery testing by measuring voltages from 1V to 50V. Simply touch the negative pole with your hand and use the pen for the positive pole. On-Off Test and Alarms: Provides backlight alarm instructions with dual sound and light alarms for immediate recognition. City Voltage Measurement: Measures home appliance voltage from 10V to 300V, making it highly versatile. Specifications: Model: HY-218A Type: Intelligent Induction Voltage Tester Detection Type: NCV Detection, Electric Leakage Detection Battery Test Range: 1.5V/9V Voltage Measure Range: ACV: 12-300V, 10V-300V for Home Appliances Battery Voltage Measure Range: 1V-50V Power Supply: Battery operated Package Included: 1 x HY-218A Inductive Voltage Tester (NO BATTERY INCLUDED) 1 x User Manual