The B series displays from Fema read a pulse input and can display a pulse count (total) or pulse rate depending on the model. A range of signals are accepted, including - TTL NPN, PNP and Push-Pull.
The 100mm devices have a viewing distance of up to 50m. This makes them ideally suited to industrial applications in paper mills, printing presses, assembly lines, or other manufacturing site where it is critical to read a count or rate measurements from distance. The rugged aluminium case makes the B series ideal for demanding environments, yet is equally suited for use in an office or exhibition.