CM sereis thumb switch setting counter/timer 4, 5 or 6digit LED display. optional dimension: 48X48mm, 72X72mm, 96X48mm Available model: CM4/7-PS41;CM8-PS51;CM7-PS61;CM7-PS42;CM8-PS52;CM7-PS62; Thrumb switch and key setting Two input channel: CP1, CP2 Two counter/timer mode: Up, Down 4 input mode: A, B, C, D. (Mode D can be used with encoders.) 2 output channel: (transistor and relay output), 12: output mode: F, N, R, C,K1, K2, P, Q, A, D, H, L Available for Power fail memory & Key protection Key and external diagrams reset function Timer pause function 8 timer modes, freely set the Two delay timer H(hour), M(minute), S(second) High anti-interference