Rotational  speed  measurement  system with  built- in motor, sensors of optical and magnetic type and  electronic counter. Demonstrates Photoreflective and Photointerruptive type sensors in addition to magnetic sensing.

 Sensor 1              : Magnetic  reed
 Sensor 2              : magnetic inductive
 Sensor 3              : Photo reflective
 Sensor 4              : Photo interruptive
 Digital Display    :  4 digit LED
 Display range      : 0000 to 9999 RPM
 Motor RPM        : 2000 max.
 Speed Range        : 10m/sec
 Operating Power : 230 V+10%, AC 50Hz