AutomationDirect CTT-1C-A120 Counter Timer Tachometer

AutomationDirect CTT-1C-A120 is a 100-240 VAC powered multi-function digital counter/timer/tachometer in a 1/16 DIN package with a two-line, 6-digit, two-color LCD display. It operates in four selectable modes—Counter (five functions), Timer (twelve functions), mixed Timer + Counter, or Tachometer—with a fully selectable timing range and SV/PV readout (SV 8 mm digits, PV 6 mm digits). The unit includes two outputs: one concurrent NPN transistor and SPST relay, plus one SPDT relay output, enabling both solid-state and relay-based signaling for flexible control. Panel mounting is via a standard 1/16 DIN cutout, with a panel mounting clip included and screw-terminal inputs for easy wiring. Input signals are compatible with NPN ON events, featuring up to 1 kΩ input impedance, and the power input is 100 to 240 VAC, 50/60 Hz, with typical power consumption under 10 VA. The CTT-1C-A120 is part of AutomationDirect's CTT family of digital counter/timer/tachometers and is commonly used for pulse counting, elapsed-time measurement, batch counting, and tachometer applications in manufacturing, packaging, and process-control environments.