Enables constant Emergency Siren ignition sense. Therefore, Emergency
Siren is only operable when the vehicle’s ignition is turned ON.Siren Ignition Sense
Radio Ergonomics Wide
PA / Siren
Enables constant Emergency Siren ignition sense. Therefore, Emergency
Siren is only operable when the vehicle’s ignition is turned ON.
When disabled, the radio-user can activate the Siren when the vehicle's
ignition is ON or OFF.
