MAIN CHARACTERISTICS range ACTI 9 range of product ACTI 9 product name ACTI 9 IFRE device short name IFRE product or component type FREQUENCY METER range compatibility PRISMA P DOOR type of measurement FREQUENCY display type LED : 3 digit(s) maximum value measured 99.9 HZ COMPLEMETARY CHARACTERISTICS frequency measurement range 20...100 HZ full scale display 99.9 measurement accuracy 0.5 +- 1 DIGIT [Us] rated supply voltage 230 V AC 5060 HZ power consumption in VA < 5 VA mounting mode FIXED mounting support DIN RAIL market segment RESIDENTIAL compatibility code FRE