... :1. Five operate mode is optional: counter, frequency meter, timer, displacement meter, batch counter.;2. 1~2 preset(s), 1 ... level, CoderInput channel1~2 input channel(s)Operation methodCount-up, Count-down, Displacement meter, Batch counter, AccumulationOutput modeN, F, R, CReset ... Required quantity base on different models).We promise:1. Low in price.2. Extra Rebate base on different order quantity ...