This is an Auto Range Professional Multifunction AC/DC Clamp Meter with 3999 counts. Capable to measure DC and AC voltage, DC and AC current, Resistance, Capacitance, Temperature (°C), Frequency, Frequency from the clamp, Duty Cycle, Diode and Continuity Tests. Features: Multifunction AC/DC Clamp Meter Data hold and Auto Zero CE, IEC1010-1, IEC1010-2-032, CAT II 1000V, CAT III 600V, EMC Φ40mm maximum conductor diameter Ergonomic grip with bigger jaw opening and larger conductor size Bigger LCD screen Overload Protection Impedance in circuit is below 30Ω with buzzer alarm Auto power off and low battery indication Automatic Ranging Safety Guard and secured jacks Double insulated Design in accordance with Electromagnetic Compatibility (89/336/EEC) & Low Voltage (73/23/EEC as amended by CE Marking (93/68/EEC) Specifications: General Specifications: Maximum Voltage: 1000 V DC or 700 V AC RMS Altitude: < 2000m Display: LCD 3999 counts Update 2 ~ 3 per second Ranging Method: Auto Range Mode Polarity Indication: "-" display for negative polarity Over Range Indication: LCD will display "OL" Low Battery: icon will appears on LCD Jaw Capability: 40mm, Max conductor size Power: 3 x 1.5V AAA Batteries Operating Temperature: 5~35°C Storage Temperature: -10~50°C Dimension: approx. 225(L) x 86(W) x 32(D) mm (8.86' x 3.39' x 1.26' inch) Weight: approx. 330g Set Includes 1 x Professional Multifunction AC/DC Clamp Meter 3 x 1.5V AAA Battery 1 x "K" type thermocouple 1 x Test Leads 1 x Protective Zippered Carrying Pouch English Instruction Manual Standard packaging box