the calculator home page

APF RS-2 (Trotting/pacing computer and Kel-co by APF)

The APF RS-2 is an arithmetic calculator with algebraic logic. It has an LED (light-emitting diode) display typical of calculators of this era. The power source is PP3 9V.

Facts at a glance:

Display typeLED
Power SourcePP3 9V
Year introduced1979


If you have an APF RS-2 that is no longer working, you can first try replacing the PP3 9V battery. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.

We suggest the following current models as possible replacements:

See other calculators by APF