The DSE103MKII Speed Switch Controller has been designed to monitor the speed of an engine by
detecting pulses from a magnetic pick-up device or alternative output.

The speed switch can be set to operate the independent relays at different speed settings. Both
relays can be adjusted to operate from between 0% and 400% of the engine’s rated running speed.
This flexibility allows the module to be used for many different applications including under speed
or over speed protection or crank disconnect.