Prinztronic 400 (M400)
The Prinztronic 400 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 25 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V. Note: Kingsonic 5000; Satek 8M (version 1); Texet 880 Executive; Unisonic 1541L
Facts at a glance:
|Power Source||PP3 9V|
If you have a Prinztronic 400 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: