| Speed ranges A2108 / A2108-LSR:  | Range I: 100 - 6000 RPM Range II: 1000 - 60,000 RPM  | 
| Speed ranges A2108-LSR-RS232  | 100 - 60,000 rpm continuous  | 
| Resolution A2108 / A2108-LSR A2108-LSR-RS2  | +/- 1.5mV +/- 1 rpm  | 
| Accuracy A2108 / A2108-LSR A2108-LSR-RS232  | +/- 0.5% +/- 0.1%  | 
| Optical Range A2108 A2108-LSR(-RS232)  | 50 - 1000mm Up to 2m (6ft)  | 
| Optical Angle A2108 A2108-LSR(-RS232)  | +/- 45 degrees +/- 80 Degrees  | 
| Light Source A2108 A2108-LSR(-RS232)  | Tungsten Filament Laser Class II 635nm  | 
| Range Select | Up Arrow = I. Down arrow = II.  | 
| Carry Case | Included | 
| Contact Adapter | Optional | 
| Voltage Output | -6 VDC Both Ranges | 
| On Target Indicator | Green LED | 
| Power | 4 x AAA batteries (included) | 
| Connections A2108 A2108-LSR A2108-LSR-  | Coiled cable with 2 x 4mm plugs fitted Binder connector + 1m cable 1m Cable + Serial plug  | 
| Mounting | Camera bush fitted | 
| Zero offset | Max. 6mV - Analogue version (A2108-LSR) | 
| Update time | Time of one revolution or 1 millisecond (A2108-LSR) | 
| Controls | 2 x press to measure buttons, one continuous mode button (A2108-LSR) | 
| Capture mode | 0.1 sec (A2108-LSR-RS232) | 
| Controls | On, Invert, Capture, Ratio (A2108-LSR-RS232) |