2
1.4.1 working power supply
POE: 44 ~ 57V / 150mA
；
USB:5V / 500mA
；
1.4.2 Environmental requirements
a. Environmental pressure: 86 kPa
～
106 kPa
b. Environment temperature: -40
℃～
+85
℃
c.Air relative humidity: 10%
～
90%, relative humidity, no condensation
(at
＋
25
℃）；
d.Environment without significant shaking or violent shock vibration
1.5 Electrical Parameter
Modulation
GFSK
Frequency Range
904.25-926.25MHz
Antenna Type
External Antenna
Antenna Gain
5.0dBi
Lowest Internal Frequency of EUT
8MHZ
MAX. Field Strength
Antenna 0:102.63dBuV/m
Antenna 1:101.62dBuV/m
2
、
Product Structure and Composition
2.1 Product Appearance Structure and Size
As shown below
，
The picture 1 shows a wireless communication device
，
the size is 123mmx104.5mmx28.3mm.
