2.
SDM 168 / SEM 180 Handheld Transmitters
2.1
Controls and Indicators
1
Grille: protects capsule and prevents "pop" noise.
1
Casing. Contains the PCB and battery compartment.
2
Battery status LED to indicate power on/off and the battery status. When the handheld
3
transmitter is switched on, the red LED flashes for a moment indicating the normal battery
status. If the LED fail to flash, there is no battery inserted, the battery is empty or has
been inserted incorrectly. When the LED stays red after having switched on the transmitter
the battery is too weak and must be replaced.
On/Off switch (Position "On" = ON, Position "Off" = OFF).
4
Battery compartment (for 9 V battery)
5
Battery cap
6
2.2
How to insert the Battery
1. Unscrew the battery cap
2. Insert a 9 V battery into the battery compartment
Battery status indicator
the battery is not inserted correctly or empty. Insert the battery correctly or replace it.
2
3
4
counter-clockwise.
6
should flash for a moment. If the indicator
3
5
observing polarity markings. The
5
3
6
does not flash,
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