Two lows of 4, 5 or 6digit LED display. Different sizes for option: 48X48mm, 72X72mm, 96X48mm Thrumb switch and key setting Two input channel: CP1, CP2 Two kinds of counter/timer mode: Up, Down and four kinds of input mode: A, B, C, D. (Mode D can be used with encoders.) Two output channel (transistor and relay output), and 12 kinds of output mode: F, N, R, C, K1, K2, P, Q, A, D, H, L Power fail memory function Key protect function Key and external diagrams reset function Timer pause function 8 kinds of timing modes, decimalization and sixty for option Two delay timer H(hour), M(minute), S(second) for option High anti-interference