This instrument is a compact pocket-sized digital multimeter for measuring AC & DC voltage, DC Current, Resistance and Diode Also provide Temperature, audible continuity test function or can be used as single generator Full range overload protection and battery indication are provided They are the ideal instrument for use in fields, such as laboratory, workshop, DIYers, and the home applications The meter is used for AC current, DC current, AC voltage, DC voltage, frequency, resistance, capacitance, temperature, diode, line continuity and non-contact voltage detection The meter has a reading hold function Specifications: Display: LCD Max display: 1999 counts Battery Model: 6F22 9V Weight: 37g Material: ABS/PVC Sampling time: about 3 times/sec Battery type: 6FF22 9V battery (not included) Size: 139*74.5*33.6mm Working temperature: 18℃ - 28℃ Storage temperature: -10℃ - 50℃ DC Voltage: 200mV + -(2% of rdg+3D) 2000mV/20V/200V + -(2% of rdg+5D) 600V + -(2.5% of rdg+5D) DC Current: 200uA/2000uA/20mA + -(2% of rdg+2D) 200mA + -(2.5% of rdg+2D) 10A + -(2.5% of rdg+10D) AC Voltage: 200V/600V + -(2% of rdg+10D) Frequency Range: 45Hz~450Hz Audible Continuity Test: Yes Resistance: 200Ω + -(2.5% of rdg+10D) 2000Ω/20kΩ/200kΩ/2000kΩ + -(2.5% of rdg+4D) Overload Protection: 15 second