Relacart Electronics WDC-900 User Manual
Page 6

P9
P10
3.3 Chairman Unit WDC-900D
[Top]
①A: Microphone in-use indicator: Lights when the 
microphone is turned on (for speech) and flashes when 
the battery level is low.
B: This indicator also flashes when the unit is applying to 
speak.
②Microphone: Use either standard length 420mm or 
longer dedicated microphone.
③LCD Window: Liquid Crystal Display indicates control 
setting and operational readings such as working status, 
operational mode and time, signal strength, battery 
condition, etc. 
④Talk key: When this key is pressed, the Microphone In-
use indicator (①) lights, and the microphone turns on. 
Pressing this key again extinguishes the indicator and 
turns off the microphone.
Note: If Central unit is power off, even Talk key is 
pressed, the Microphone In-use indicator does not light, 
the microphone still turn off.
[Bottom]
[Rear]
WDC-900C
Wireless Di scussion Co nference sy stem
4
3
⑥AA battery compartment Install AA Battery in this 
compartment.
⑦
to switch on the power, while in 3 seconds 
the power will be off.
Power switch: Press switch in 1 second
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