Shenzhen JWL Electronics Co. Ltd. HT-U20 User Manual
2
Unscrew the battery cover at the end of microphone, put a 9V battery into compartment with
correct polarities, then close the cover. Pushing "ON/OFF" switch to "ON" position, "PWR"
indicator comes on blue. If it doesn't come on, please check the voltage of battery or
polarities. If it gets dim bit by bit, then "LOW" indicator becomes red in using, this indicates
battery is dead, please replace by another new one. Pushing "MUTE" switch to downside,
audio will be cut down, noises are prohibited to come across receiver. To use microphone,
please push "MUTE" switch to upside. Please confirm frequency of transmitter same as that
correct polarities, then close the cover. Pushing "ON/OFF" switch to "ON" position, "PWR"
indicator comes on blue. If it doesn't come on, please check the voltage of battery or
polarities. If it gets dim bit by bit, then "LOW" indicator becomes red in using, this indicates
battery is dead, please replace by another new one. Pushing "MUTE" switch to downside,
audio will be cut down, noises are prohibited to come across receiver. To use microphone,
please push "MUTE" switch to upside. Please confirm frequency of transmitter same as that
of receiver before operation.