Features: Multifunction Pen Multimeter -- This pen-type digital multimeter can perform 4V-600V AC/DC voltage measurement, resistance from 4k - 40M, capacitance, frequency test and On-off buzzer detection, Zero fire detection, etc. Convenient Use -- Since 4000 counts large backlight LCD scree and flashlight function, the value can be clearly read even in dark places. Data hold function, you can save data with one click, convenient for data reading. Non-Contact Measurement -- Digital multimeter supports NCV non-contact voltage detection, and can distinguish the null line and the fire wire to avoid the risk of electric shock. Safe and reliable. Auto Power Off & Audible Alarm -- The pen multimeter has an automatic shutdown function, which will automatically shut down if there is no operation for mins, lowe power consumption. Audible + light alarm make measurement more easy. Easy Carry -- Compact pen type design for convenient single hand use, easy to carry and operate. It is very suitable for home, school, laboratory, factory and other applications. Specification: Maximum Display: 4000 Count Material: ABS + Brass + PVC Power Supply: 2 * AAA (Not Included) Alarm: Audible + Light alarm Auto Off: Yes LCD Screen: With Backlight Data Hold: Yes EF Function: Yes Date Retention Function: Yes Buzzer Function: Yes