... life:more ten years requency:4HZ ITEM: KLS11-KQ16B counter, Meter counter, mechanical counter, Step counterVery Stable quality/ Good price/6 wheels/1 ... , hardware, LED displays, LCD displays, power meter parts (including counters, shunters, transformers, varistors, capacitors, meter case tooling), circuit connectors, cable, PCBs, ... the society.KLS Culture: Serious Work, Enjoy Life Electronic COUNTER