General Tools TS04 Connected Digital Multimeter reads voltage, current, resistance, temperature and more with turn of the dial. It also allows a smartphone to serve as a second viewing screen in case conditions are dark, or there's more than one person on the job. All data goes directly from the meter to the Tool Smart smartphone app. INCLUDES - One pair of double-insulated test leads, bead thermocouple probe and plug adapter, 9V battery and user's manual SPECIFICATIONS: AC Voltage Measurement Ranges: 0 to 4V/40V/400V/600V AC Voltage Measurement Accuracy/Resolution: +/-(1% of reading + 10 digits)/1mV DC Voltage Measurement Ranges: 0 to 400mV/4V/40V/400V/600V DC Voltage Measurement Accuracy/Resolution: +/-(0. 8% of reading + 5 digits) in 600V range; +/-(0. 5% of reading + 2 digits) in other ranges/0. 1mV AC/DC Current Measurement Ranges: 0 to 400uA/4mA/40mA/400mA/10A AC/DC Current Measurement Accuracy/Resolution: +/-(2% of reading + 3 digits) in 10A range; +/-(1. 2% of reading + 6 digits) or better in other ranges/0. 1 micro Ampere Resistance Measurement Ranges: 0 to 400/4k/40k/400/4M/40M Ohm Resistance Measurement Accuracy/Resolution: +/-(0. 8% of reading + 3 digits), typical)/0. 1 Ohm Temperature Measurement Range: -4 Degree to 1832 Degree F (-20 Degree to 1000 Degree C) Temperature Measurement Accuracy: +/-(2. 0% of reading + 2 digits) Measurement Range of Included Thermocouple Probe: -4 Degree to 500 Degree F (-20 Degree to 260 Degree C) Measurement Accuracy of Included Thermocouple Probe: +/-(2% + 2 digits) Continuity Threshold: 110VACRMS@ Bluetooth Range: 33 ft. (10m), max (unobstructed) Maximum Input Voltage: 600VDC/ACRMS Fuse Protection: 400mV/600V fuse for multi-function jack; 10A/600V fuse for 10A jack Sampling Time: 3X/sec Display: 3-3/4 digits, w/maximum count of 4000 Low Battery Indication Threshold: Operating Temperature: 32 Degree to 104 Degree F (0 Degree to 40 Degree C) @ Power Source: (1) "9V" battery (included) Weight (including battery): 8. 2 oz. (232g).