Speed / Revolution Per Minute Indicators are available in various models like simple speed indicators, loss motion detectors, linear speed indicators etc. The Speed / Revolution Per Minute Indicators provide stable reading and are also available in 4 digit and 6 digit displays. The Speed / Revolution Per Minute Indicators have operating voltage of 230 V AC/ 110 V AC and consist of memory to store parameters. Speed / Revolution Per Minute Indicators have input facility from proximity/ rotary encoder.