... years requency:4HZ ITEM: KLS11-KQ16B counter, Meter counter, mechanical counter, Step counterVery Stable quality/ ... we are wilding and strongly on below products line: Electronic components include:Terminal blocks, connectors, buzzers, potentiometers, ... displays, LCD displays, power meter parts (including counters, shunters, transformers, varistors, capacitors, meter case tooling), circuit connectors, ...