Mechanical counter 1,Digits: 5+1 or 6+1 2,Voltage: 3.5V to 6.5V 3,Ratio: 1:100, 1:200, 1 ... greater than: 2.8v3,Normal working voltage: 3.5v to 6.5v4,Pulse width: 70 to 320ms5,Working temperature: minus 40 ... life: greater than10years Anti-vibration and anti-impact property comply with GB/T17215Note: technical indexes for JDC3 double rate meter are ...