RPM， speed， frequency display with 2 limits.Reading programmable as 1/s， 1/min， 1/h Input: NPN， PNP， Namur， TTL， 10…600 VAC Two limits SET 1 and SET 2 Sensor supply 5 V， 8 V， 12 V Frequency 0.01 Hz…7 kHz Period duration measurement LED display， 4-digits DIN housing 48 x 24 mm Interface RS485
