- One NPN alarm output channel is provided. You can connect an indicator light for warning, and the alarm field values are customizable. - Compatible with Hall switches, metal proximity switches, infrared proximity switches, and other detection switch signals. - Multi-function meter that combines speed measurement, counting, and an upper-limit alarm output. - Reliable performance, easy to install, and wide applicability. Suitable for mechanical equipment requiring rotational speed measurement or production counting, such as harvesters, machine tools, motors, and fans. - Use scenarios: 1) On a production line, monitor machine RPM and count parts produced, with an alarm when the upper limit is reached. 2) In machine tools, track spindle speed, count cycles, and trigger warnings at preset limits. 3) In motors or fans, monitor rotational speed and perform production counting where accurate speed and counts are required. - Key attributes: function (speed measurement, counting, upper-limit alarm), compatibility (Hall, metal and infrared proximity switches), simple installation, and reliable performance for diverse applications.