How to Use:
First connect the transmitter to the 9V battery (not included in the product, it needs to be purchased separately), and then straighten the transmitter antenna (ie the black cord) where you need to listen, and install the 3.7/lithium battery after opening the back cover of the receiver ( Built‑in), turn on the power switch with headphones, adjust the channel adjustment button on the receiver until the received signal is the best. You can adjust the size of the sound according to your needs and you can use it normally. (The position of the button is shown in the figure)
Specification:
Item Type: Wireless Transmitter
Material: ABS
Receiver Working Voltage: 3.7V
Receiver Working Current: 20-30ma
Transmitter Working Voltage: 9V
Transmitter Working Current: 15-40ma
Built-In Battery: 890mah Lithium Battery BL-5B
Package List:
1 x F-908 Receiver
1 x F-908 Transmitter
1 x Headphone
1 x USB Connection Charging Cable
1 x Manual
Note:
When the channel is disturbed, after removing the battery 5 seconds, the software will automatically reset to channel 14 after reinstalling the battery, and it can be used normally. (The transmitter is transmitted on channel 14)