... Proximity switch/Encoder; Rate setting for option. Digital Length Counter(MFH) 1,Various wave form pulse input,contact switch, ... of machinery,food,package,etc for measuring not only height,location,length,counting,but also frequency,speed,length count ... 100 selectable. Case class:IP65. Main product:Panel Meter Counter Weighing indicator Temperature/Humidity Controller Current/Voltage/Power meter, ...