[05]
1. Tel/PC button(DA-275 ONLY)
Press it for telephone, internet
phone and computer(or Audio) use
Depress it for telephone use only.
2. Main Listening Volume
Controller
You can increase or reduce the
volume of your caller s voice
and audio from PC.
3. Handset / Headset Button
Press it for handset use and
depress it for headset use.
4. Battery test indicator
Press mute button, if it does not
right, replace all batteries.
5. Mute Button(DA-275 ONLY)
(= Battery test)
Press the button to cut off the
microphone temporarily. Just
depress the button to resume
communication with your caller.
If the battery test indicator does
not light by pressing mute
button, replace all the batteries.
(Operational battery life : not
less than 2,000 hours)
6. External power supply jack
(
)
You can use AC power adapter
(3V DC) instead of battery.
7. Handset Jack (HANDSET)
Connect your handset to this
jack.
8. Telephone jack (TEL)
Connect a telephone curly cord
supplied between the handset
jack of your telephone and
amplifier.
9. External computer or Audio
device jack (PC)(DA-275 ONLY)
Connect a computer cord
supplied between computer or
audio and amplifier.
10. Stereo Jack for Recorder
The Stereo plug of recorder can
be connected (Option).
11. Telephone Compatibility
Switch
Compatibility setting between
telephone and amplifier.
12. Dip switch
Features
Summary of Contents for DA-275
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Page 2: ...Telephone Headset Amplifier Owner s Manual DA 275...
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Page 5: ...04 1 Features Overview...