4.3 Antenna
There are UHF internal radio antenna and 3G/GPRS antenna, you can select the
appropriate antenna according to the operation mode. The UHF radio antenna is used in
the UHF mode, and the external 3G/GPRS antenna is used in the internal GSM mode.
4.4 Benchmark
Figure 4-3-1 UHF Radio Antenna (Above)
and 3G/GPRS Antenna (Below)
The benchmark is used to measure the height of the instrument.
Figure 4-4-1 Benchmark
4.5 Battery & Charger
4.5.1 Battery Installation and Unload
1. Installation
Press the battery cover button gently and press down. The battery cover can be lifted
upwards. The battery cover and battery are removed as shown in the figure. To the right is
unlocked and locked to the left.
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