ALTRONIC DO-3300 SPEED SWITCH

The Altronic solid state, digital speed switches operate directly from capacitor-discharge ignition systems. They are applicable to 1 – 16 cylinders, 2  or 4 - cycle engines.

The digital overspeed trip is easily set in 10 RPM increments by three rotary switches on the device. The circuit consist of a digital counter operating on a 0.25 – 0.38 second time base for fast reaction to an overspeed.

This overspeed trip model is designed for small and medium engine applications using Altronic I, I-6, III and V ignition systems.