Mark ER 415 BT Manual Del Usuario página 4

INSTALLATION
Microphone
- Once the device is powered up, press the ON/OFF switch on the control panel (ON position to turn it
on).
- It can be operated by the built-in microphone or by connecting the external microphone to the mini
jack connector.
- Use the +/- volume buttons to control the output power.
Siren and music
- Press the MUSIC/SIREN button to switch between siren or music modes.
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