1.Power Button (PWR): Press and hold this button for 2 seconds to turn the transceiver on or off.

2.Push-to-Talk Button (PTT): Press to transmit. Release to receive.

3.Monitor Button (M): Press and hold to bypass the squelch and listen to channel activity.

4.Belt Clip

5.Battery Compartment

6.Speaker

7.Microphone

8.Call Button: Press and hold this button to send a ringing sound to other radios tuned to the same channel.

9.Down Button ( ): Press this button to decrease the volume or channel setting.

10.Up Button ( ): Press this button to increase the volume or channel setting.

11.LCD Display: Displays the current FRS channel number as well as other functions.

12.Function Select Button (F): Press this button to select or scroll through all unit functions.

13.Antenna: Place in the Up position for transceiver use, Down position for storage.

14.Microphone / Charger Jack (MIC/CHG): For use with an external microphone button and optional battery charger.

15.Speaker (SP.) Jack: For use with an Audiovox approved headset accessory only.

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Audiovox FR-540 manuel dutilisation Belt Clip Battery Compartment Speaker Microphone