Digital Counter Operating temperature: -10...+55 °C Counter input: Non-voltage, PNP/NPN 24..240 VAC/DC Dimensions: 48 x 24 x 54 mm Operating voltage: 24 VDC Power supply, internal: Lithium battery Backlight: Green/Red Display type: LCD Displays: 8-Digit Protection rating: IP66 (Front Panel) Termination type: Screw Terminal Counting frequency max.: 2 kHz