Extech 461900 Contact Photo Tachometer

The Extech 461900 Contact Photo Tachometer provides accurate RPM readings with a single point laser or reflective beam. This handheld device features a large 4-digit LCD, data memory storage, and a contact/remote sensor for a complete RPM measurement solution. Get the reliable data you need with accuracy up to ±0.05%.

Measurement Range: Range A: 100 to 1999 RPM; Range B: 1000 to 19990
Resolution: 1 or 10 RPM depending upon range
Adapter Output: 0.1mVDC per 1 RPM in Range A; 10 RPM in Range B
Accuracy: +- (1.2% + 2 digits)
Detection Distance: 2 to 6" (50 to 150mm);
                                 12" (300mm) distances possible with low ambient light
Power Supply: Four 1.5V "AA" batteries (UM-3 or equivalent)
Dimension: 6.7x2.8x1.5"