... 3 preset points; Input:Pulse/Proximity switch/Encoder; Rate setting for option. Digital Length Counter(MFH) 1,Various wave form pulse ... line of machinery,food,package,etc for measuring not only height,location,length,counting,but also frequency,speed,length count,etc.2,Accuracy ... 6 digits display,sensor power supply 12V/24V/30mA available,For 8 digits display, please indicate when ordering.5,RS232 or ...