Counter Number of Digits 8 LCD Display Character Height 0.28 in Black on Light Background Max Counts per Second 40 Input Signal 20VAC (VIH)/10VDC (Minimum) 3VAC (VIL)/3VDC (Maximum) Mounting Round Flush Diameter 2.21 in Depth 0.78 in Preset Yes Power Required Self-Powered (10 yr. Lithium Battery) Reset Type Remote Connector Type Spade Terminal Special Features They are Totally Sealed with the Optional Gasket and have a High-Visibility Polarized Lens Standards CE Approved cUL UL