Multimeter Pen Type 4000 Counts Auto Ranging DC AC Voltage Resistance Tester Meter Voltmeter Item Type: Multimeter Pen Type Model: AN-20 Material: ABS Battery: 2 x 1.5V AAA battery, delivered without battery. Use: For DC voltage detection, AC voltage detection, non contact voltage detection, single pen live wire detection. Display: 4,000 counts. SMART Function: Auto ranging. For measurement on AC and DC voltage, resistance, circuit on and off. Live Wire Contact Recognition: Yes, with sound and light alarm. NCV Non Contact Voltage Detection: Yes, with sound and light alarm. On and Off Test: Yes, resistance <50 Ω and buzzer sounds, indicator light turns red. Data Retention: Yes True Effective Value under 40Hz-1kHz: Yes Low Voltage Indication: Yes Automatic Shutdown: Yes Flashlight: Yes DC Voltage: 4V, 40V, 400V, 600V, with 1mV resolution. DC Voltage Overload Protection: Maximum Input 600V AC Voltage: 4V, 40V, 400V, 600V, with 1mV resolution. Frequency Response: 40-1000Hz Frequency Overload Protection: Maximum Input 600V Resistance: 4KΩ, 40KΩ, 400KΩ, 4MΩ, 40MΩ, with 1Ω resolution. Resistance Overload Protection: Maximum Input 250V On and Off Test: Resistance <about 50 Ω and buzzer sounds, indicator light turns red. Overload Protection: Maximum Input 250V