User's Manual

3.1. PU receiver instructions
Disassemble the battery cover screws by screwdriver. Insert three AAA alkaline batteries (Ensure the polarity of the
batteries is right). Assemble the battery cover and fixed with screws. Note: Use battery or AC adapter as power supply.
a Press the power button, power LED flashes green when powered by battery or power LED light on when
powered by AC adaptor.
b When battery voltage is lower than 3.4V the low battery alarm (BB sounds) voltage appears. When
battery voltage is lower than 3.1V the device is switched off. The alarm should appear first then follow by
the power LED off. You should replace the batteries when the device is in low power state.
c The volume indicator is off when PU is idle and flashing when PU is in communication with BU. (Note:
ABM1112 have this feature, ABM1111 without this feature)
d Communication light off when PU is in communication. When PU is idle the green light flashes.
3.2. BU transmitter instructions
a Connect the power adapter (5V 550MA)
b After the device is powered up, the power LED will be on. (Hold power button for about 3 seconds)
c Press the power button to change channel (a total of 12 channels can be changed, press the power button
to change the channel if interference led to poor communication)
4. Communication Function
a When PU and BU are power on, the two sides are automatically connected successfully. PU can receive
signals transmitted (voice) by BU.
b PU volume indicator will be on when receiving the signal, the greater the volume and signal of the
receiver the indicator flashes more.
c Default volume of PU receiver is 3 phases.
d Users may adjust the volume by pressing the volume up/down button. (Total volume adjustment 5 phases)
e When PU unable to receive signals from BU, communication LED (red) on. Communication LED will be
off when PU is receiving signals.
f Communication distance of PU and BU:
i. Outdoor without any obstacles communication distance is up to 250 m.
ii. Indoor depends on the status of obstacles.
Note: Please switch off PU receiver when it is not in use.
5. Problem diagnosis and troubleshooting
Reasons for PU cannot receive BU signal:
a Whether power supply plugged in properly for BU, whether BU is switched off.
b Whether there are nearby interference (WIFI or other device), press the power key once on BU to adjust
to another channel.
c Whether there are too many obstacles and, or too far away.
6. Product parameters
6.1 PU Receiver
a Receiver Frequency：2.4G
b Power Supply：AC110～240V DC IN 5V 2W Current consumption 400MA or AAA alkaline dry cell 3