ZEKLER 412 RDB Gebrauchsanweisung Seite 9

Warning! Connection of an external audio source can entail a sound level that exceeds the daily permitted
exposure level.
NOTE! The volume function (A:12 or A:10) must be turned on when using the external audio input.
USER INSTRUCTIONS FOR BLUETOOTH® FUNCTIONS
You also need access to the user instruction for the Bluetooth® compatible unit (mobile phone etc.)
communicating with the headset. The hearing protector features level-limiting of audio signals from the
speakers to maximum 82 dB(A) at the ear.
Pairing with other Bluetooth® unit
Pairing establishes a wireless link for communication between the units. Pairing is only needed once for
each pair of units. The headsets can store up to 8 different units in its memory.
1. Start the headset Bluetooth® function by pressing and holding down the Bluetooth® knob (A:14) (from
here on referred to as the BT knob) for 3 seconds. An audio signal with 4 ascending tones is
heard in the headset. The headset LED light (A:15) flashes red/blue to confirm
pairing mode. Release the BT knob.
2. Start the Bluetooth® function on your phone (or other unit) and search for and connect to new unit. See
the user instruction for your phone (or other unit). Zekler 412 is shown in the phone's display. If the phone
requires a PIN code, enter four zeros (0000).
3. An audio signal with 1 tone is heard in the headset when the link is established and ready for
communication. The headset LED flashes blue.
4. If the pairing fails, switch off all headset functions and restart again from step 1.
The headset boom microphone (A:7) should be placed approximately 1 cm from the mouth for best
noise suppression and clear speech intelligibility. Make sure the microphone is facing the mouth
(A:7b).
When Bluetooth® pairing has been activated, the link is automatically established with the headset next time
the hearing protection is switched on. The connection link is confirmed with an audio signal in the headset
and the LED flashes blue.
Turning off the Bluetooth® function
Press and hold the BT knob for 6 seconds. An audio signal with 4 descending tones is heard in the headset
confirming the Bluetooth® function is turned off.
Answer/End/Refuse call
Most phones send their own call signal to the headset. If not, 4 shifting tones are heard in the headset at
incoming calls.
1. Answer a call by pressing short on the BT knob. 2 ascending tones confirm that the call is connected
2. End a call by pressing short on the BT knob. 1 short tone confirms that the call is disconnected.
3. To refuse a call, press and hold the BT knob for 3 seconds. 2 descending tones confirm the call is
refused.
Redial last dialled number
2 short presses on the BT knob redials the last dialled number.
Voice dial from headset via connected phone
See the user instruction for your phone if it supports voice dial.
1. Press and hold the BT knob for 2 seconds and release the BT knob.
2. Speak your voice dial command.
Most phones that support voice-controlled dialling will send an acknowledgment signal when to speak
your voice dial command.
Transferring calls to/from a phone
1. Press the BT knob for 1 second to transfer the call to the phone. A short tone will confirm the call is
transferred to the phone.
2. Press the BT knob for 1 second to transfer the call back to the headset.
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