Manufacturer Camden Door Controls Model CV-600 Reader Dimensions 1 1/8 W x 3 3/4 H x 1/2 D (23 x 95 x 12 mm) Control Unit Dimensions 2 3/4″ W x 3 1/2″ H x 2 1/4″ D (70 x 90 x 57 mm) Number of Users Up to 999 Voltage Input 12V AC/DC Read Range 1-2 inch read range Warranty 1 Year Warranty Weight 2.0000