Table 2-2. Cab Controls and Instruments 250 GPM Mini-Pumper Firefighting Truck (Continued)

TM5--4210-224-14&P

Table 2-2. Cab Controls and Instruments

250 GPM Mini-Pumper Firefighting Truck (Continued)

(Refer to Figure 2-2)

Key

Control or Indicator

Function

YELP In this position, a continuous rapid "warbled" tone is generated.

Depressing the manual pushbutton will have no effect.

HI-LO In this position, a two-tone sound will be heard.

Depressing the

manual pushbutton will produce the YELP tone.

ON/OFF PA Volume Control.

The ON/OFF PA Volume Control is used to turn the siren on and off.

It is also used to control the volume when the siren is used for public

address or radio amplification.

Clockwise rotation of the knob increases voice volume in the public

address or radio amplification mode.

The volume control does not control the volume of the siren signals.

Microphone Jack.

The Microphone Jack is designed for common microphone use.

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