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thh12 handheld tRansmitteR detailed setuP
To begin, twist the bottom section of the THH12 transmitter counterclockwise, unscrew and remove
it. Lightly pull the battery cover tab down with a thumbnail, and open the cover by pulling back; it is
hinged at the base of the transmitter. Insert two AA batteries, noting the polarity markings shown in
the battery compartment.
Note, Use alkaline batteries, or rechargeable NiMH batteries in the 2400 – 2800 mAh range. See
Battery Level Indicator Functions, for more details.
AA BATTERY
Close the battery cover and replace the bottom section of the transmitter. Press and briefly hold the left
ON/MUTE button located below the display. The top line shows the currently selected channel, and the
bottom line shows remaining battery life. The backlight will light for a few seconds, and then turn off.
Note, The transmitter buttons are recessed to prevent accidental activation, so press them down firmly
below the recessed surface, until you feel a click. Avoid using pointy objects such as ball point pens.
The transmitter must be set to the same channel as the receiver it is to work with (if the receiver is on
channel 9, the transmitter must also be set to channel 9). Press and hold the
SELECT button for two
seconds, and the display will show CH on the top line, and the currently selected channel on the second
line. Press the
ON/MUTE button to go through channels 1 through 14, with each click incrementing
to the next channel; the channel number will flash. At the desired channel, stop and press and hold the
SELECT button for two seconds (or do not press any button for 15 seconds). The transmitter will then
change to the newly selected frequency, and return to the main display. Check the receiver display to
confirm that the transmitter signal is being received.
When the transmitter is on, a quick push of the ON/MUTE button will mute the audio from the mic,
and the backlight will remain lit while it is muted. The word [MUTE] will appear on the display.
Another quick push will un-mute it. The THH12 transmitter has other editable functions, including
high and low power modes, selectable microphone models, encryption options, and the ability to give
the transmitter a 6-character name that will show on both the transmitter and receiver displays. For
more details, see Setting Microphone Models and Encryption.