This multifunctional tool Features the function of multimeter, electrical test pen and flashlight. With backlight LCD screen for easy reading and comfortable grip for easy operation, it can be widely used in electrical testing, automotive repairing, and more household/ industrial electrical problems. Features: [3-in-1 Multifunction Multimeter] Smart digital multimeter, electrical test pen and flashlight. Two measuring pens are easy to install and use. Widely used in electrical testing, automotive repairing, and more household/ industrial electrical problems. [Auto Recognition/ Manual Selection] High accuracy, wide measuring range, 4000 counts, auto recognition or manual selection. It can test AC voltage, DC voltage, resistance, frequency and continuity. And HT124B can also test capacitance and diode. [Electrical Test Pen] Bring the NVC part close to the conductor or use the red measuring pen (remove the black measuring pen) to contact the conductor, and it will send out an audible and visual alarm when the AC voltage is detected. It can help you recognize zero wire and live wire safely and easily. [Backlight LCD Screen & Flashlight] Clear LCD screen with backlight greatly enhances the reading experience and makes it easy to read. Flashlight to illuminate the measurement object without fear of dark environment. [Battery Operated & Compact Size] Powered by 2 AAA batteries, auto shutdown in about 15min to save power. Ergonomic design, perfectly fits your palm for convenient use. Concise appearance, small and lightweight, easy to carry. Note: 1. Please read the user manual carefully before use. 2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Model: HT124A/ HT124B (Optional) --HT124A: without Capacitance Measurement/ Diode Test --HT124B: with Capacitance Measurement/ Diode Test Color: Black Material: ABS Screen: LCD with Backlight Max. Count: 4000 Counts Max. Voltage: 600V DC or AC Max. Resistance: 40M Continuity: Approx. 50, buzzer will sound and the indicator light will be on Max. Frequency: 4MHz Max. Capacitance: 4mF (HT124B only) Display Diode Voltage Drop: (HT124B only) Power Supply: 2 * 1.5V AAA Battery (NOT included) Auto Shutdown: about 15min Operating Height: 2000m Operating Environment: 0~40 (80% RH, 10 non condensing) Storage Environment: -10~60 (70% RH, remove the battery) Item Size: 125 * 65 * 20mm / 4.92 * 2.56 * 0.79in Item Weight: 104g / 3.66oz Package Size: 16.5 * 9.5 * 5cm / 6.50 * 3.74 * 1.97in Package Weight: 228g / 8.02oz Package List: 1 * Smart Digital Multimeter 2 * Measuring Pen 1 * User Manual (English)