DUOYI DY2201 Car High-precision Digital Automobile Multi-function Maintenance Automatic Universal Meter Features 1. With overload protection and mechanical protection functions. 2. Buzzer alarm, automatic shutdown, air conditioning temperature measurement. 3. Wide range of applications. 4. Functions: DC voltageAC voltageDC currentAC currentresistanceduty ratiofrequency measurementdiode and continuity testbattery voltage measurementclosing anglespeedtemperature measurement. 5. The high-precision soft plastic shell can better protect the body. Specification 1. Duty cycle: 1-90% 2. Speed: 34568CYL 3. Closing angle: 34568CYL 4. Alternating current: 20mA200mA20A 5. DC current: 20mA200mA20A 6. DC voltage: 2202001000V 7. AC voltage: 220200700V 8. Temperature: -0~1000 degrees Celsius 9. Resistance: 200 ohm20K ohm, 200K ohm20M ohm 10. Voltage input impedance: 10M 11. Power supply mode: 9V dry battery (included)