The TCT101 series is available in a range of configurations: Timer, Counter, Tachometer/Frequency counter.
TCT101-1ABC with 5 operating modes: Timer-ON, Timer-OFF, Pause-Work, Oscillator, PWM (proportional time output), all with settings independent of the ON-OFF times.
TCT101-2ABC, can be configured as single and double counter, incremental and decremental counter with the option of setting an external potentiometer
TCT101-3ABC frequency reader from Encoder Push-Pull/Line-Driver TTL, mono- or bi-directional up to 100kHz.
TCT101-4ABC-T configurable as Timer /Counter/ Tachometer with communication serial port for the transmission of setpoints, Times/Counts/Frequency.