User's Manual

③
The bigger the number, the more unlikely the receiver signal will be interfered by
another group’s transmitter, but the shorter the transmitting range will be.
The normal value should be 3 or 4.
Note: These products are one way wireless communication system. Widely used in
the simultaneous interpretation, tour guiding, teaching, training, conferences, etc.
One transmitter can talk in one group to numerous receivers. The working
frequency is mainly UHF 794-806MHz in Asia, UHF 863-865MHz in Europe, and
UHF 902-928MHz in North America. Only manufacturer can change the frequency.
The devices use rechargeable batteries. 70T transmitter can work 25 hours
continuously after full charge and 70R receiver can work 60 hours continuously
after full charge. Micro USB cables can be used to charge the devices. Be ware of
the correct plugging direction. Wrong and violent plugging will damage the
charging port in the device. It will take 5 hours for full charge. When the devices are
being charged, the light will turn red. When they are fully charged, the light will turn
green.
Manufacturer: Shanghai Biancheng Electronic Technology Co., Ltd.
Address: Building #C, 180 South Changjiang Road, Shanghai, China
TEL: [phone]
Website: www.wirelesslinkx.com