Operating Voltage: 8-V to 16-V DC Temperature Range: -50 to 300F RPM Range: 0 to 15,000 RPM Model: 2000 Series 4 Cyl 62-64 4000 Series 4 Cyl 62-64 501, 501 Series 4 Cyl 600, 600 Series 4 Cyl 601, 601 Series 4 Cyl 700, 701, 701 Series 4 Cyl 800, 800 Series 4 Cyl 801, 801Series 4 Cyl 900, 901, NAA