DUOYI DY2201C Digital Multimeter Engine RPM Voltage Resistance Automotive Diode Ignition Circuit Tester Switching Ohm Vo

​Description DUOYI DY2201C Automotive multi functional meter is suitable for professional auto detection and repair engineering design testing production test is your ideal portable automobile repair and maintenance tools The sophisticated design convenient operation accurate readings complete functions the use of new protective sleeve and large screen liquid crystal display Jack in the input end is connected with the PTC thermistor element to the instrument core components function range switch protection especially for fully In order to further prevent error operation on the current measurement Jack adopts mechanical protection device only in the selection of current measurement corresponding to themAor20AJack will be open otherwise is blocked by the baffle plate effectively avoid the wrong one greatly improving the safety of the products and service life Features AC DC voltage current Resistance test diode PN junction voltage measurement Circuit switching transistor test Temperature measurement ℃ 2 stroke 4 stroke engine speed measurement Unit RPM Frequency measurement Unit Hz Duty ratio measurement Pulse width measurement unit ms Ignition dwell angle measurementLarge LCD display size in 7048mm high contrast 28mm character height clear and pleasing LCD with white back light convenient in dark environment operation Maximum display 1999 for 31 2 digit AC and DC voltage current resistance 19999 for speed frequency pulse duration dwe