Features:Professional AC Voltage Detector.Non-contact test.Designed for measuring AC voltage.Voltage sensitivity is from 100V to 240V AC.It is designed according to IEC1010-1 CAT III 600V concerning safety requirements.Safe， professional and easy-to-use.Small and compact pen， design for easy carrying.Specifications:Safety: For indoor useVoltage Sensitivity: 100V to 240V ACFrequency: 50/60HzDetection distance: <5mmOperating Temperature: 32 to 122F(0 to 50degree)Storage Temperature: -4 to 140F (-20 to 60degree)Humidity: <85%RHBattery: 2 * AAA batteries(batteries are not included)Item dimensions: 14.8 * 2 * 2.5cmItem weight: 40gPackage size: 23 * 9.6 * 3.5cmPackage weight: 77gPackage including:1 * AC Voltage Detector