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2.8.3 Main Unit-Left View
FIGURE 3 Main Unit(Left View)
1 Speaker For acoustic indication or alarm.
2 USB port Covered with a rubber cap, and used for
software maintenance and upgrade.
3 DC port Covered with a rubber cap, and used for
connection of power adapter or used for DC
. power supply on ambulance or helicopter.
4 battery cartridge For mounting of battery.