User Manual

2). Press and hold Talk button in standby mode to enter the state of ring tune
setting, and then each time you press Talk button to switch a group of ring
tunes. Three groups ring tunes cycle:
Group1
Group2 Group3
press Talk button press Talk button
press Talk button
3). If there isn’t any operation within 10s, or press any button, it will exit the
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setting.
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Power Supply: DC26V
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Power Consumption: standby 4.4mA,working 81mA
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Working Temperature: -15ºC ~ +45ºC;
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Wiring: 2 wires, non-polarity
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Dimension: 3.55(H)X5.43(W)X0.69(D)inch