mounting nut and washer. 16mm Low Profile Encoder. Brought to you by Alps, this selection of rotary encoders are available as PCB or panel mount with vertical mounting options. These 24 pulse rotary encoders are long life, and boast a rotational life of 100000 cycles. Features and Benefits:. Output signal, channel A leads channel B by 54° ±30° with clockwise rotation 24 pulse With ( ; 265-1739 265-1739 ) or without detents ( ; 265-1723 265-1723 ) Long life Plastic shaft with flat edge