FW Murphy 20700124 OS771-040-NTO Electronic Speed Switch

The OS77D Series single set point speed switch is a compact all-electronic speed sensing module. It can be panel mounted via its trip set point potentiometer.

Normally Open; 40-400 Hz, distributor ignition input

Application:

• Overspeed shutdown. Activates engine shut-down circuit on engine overspeed. Operate PTOs or drive circuits. Engage or disengage engine PTO, four-wheel drives or other control circuits according to RPM monitored. Disconnect engine cranking when engine starts.