... quality,reasonable price,hot sale Detailed Product Descriptionpanel meter,meter,digital panel meter 1.OEM 2,High quality,reasonable price,hot ... parameter,such as AC,DC,Voltage,power synchronous volume,frequency,expended voltage and overload current etc.The product performance ... pounding frequeney of 80 to 120times per minute,and two hours tansport jolt;Operating positon:vertical directionFrequency:50Hz ...