9
10
4. When the headphone cannot be turned on, the
battery may be exhausted, please charge it.
Check that the dongle is plugged into the
correct (hearing aid) USB on the Cello TV.
Check that the TV is not muted and the volume
control of the TV is not zero. Try increasing the
volume control of the TV.
2. When the headphone and the dongle are
within a meter of each other but there is noise in
headphones, check whether the dongle is
blocked by metal obstacles or the TV is mounted
on a metal wall.
3. When the headphone and the dongle are
within 5 meters if noise appears, and the sound
is unclear, please switch the dongle channel with
the button 2.
Modulation: 50khz
Mode: RF Stereo
Working Distance:
About 20 meters in the same room
Voltage: 3.7V (420mAh built-in rechargeable
battery)
Operating Current: 55mA
Working Time: about 8 hours
Audio Frequency Response: 60~15000Hz
Receiving Sensitivity: better than 8dBuV emf
Distortion: <1%
S/N: >60dB
Transmitter Dongle Specification
Headphone Specification
