Chengdu Ebyte Electronic Technology Co.,Ltd
E31-400M17S User Manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co.,Ltd
10
8 Models:
Model
Chip
Freq. Range
Power
Tested
Communicating
Range
Size
Encapsulation
Communicating
Interface
Hz
dBm
km
mm
AX5243
425-450.5MHz
17
3
26*16
SMD
TTL
E31-433T30S
AX5243
425-450.5MHz
30
8
40.5*25
SMD
TTL
E31-400M17S
AX5243
400-525MHz
17
3
20*14
SMD
SPI
9 Antenna Guidance
9.1 Antenna Recommendation
Antenna lays an important role in the communication process. Inferior antennas often have a great negative impact on the
communication system. Therefore, we recommend below antennas which are compliant with our wireless modules and have excellent
performance and reasonable price.
Model
Type
Freq.
Gain
Size
Feeder
Length
Interface
Features
Hz
dBi
mm
cm
FPC antenna
2.4G
2.0
10x50
-
IPEX
Flexible FPC soft antenna
Plastic Antenna
2.4G
2.0
30
-
SMA-J
Ultra short straight, omnidirectional antenna
Plastic Antenna
2.4G
2.0
50
-
SMA-J
Ultra short straight, omnidirectional antenna
Plastic Antenna
2.4G
2.0
50
-
SMA-J
Fixed bending, omnidirectional antenna
Plastic Antenna
2.4G
2.5
110
-
SMA-J
Foldable, omnidirectional antenna
Plastic Antenna
2.4G
3.0
200
-
SMA-J
Foldable, omnidirectional antenna
Sucker Antenna
2.4G
3.5
150
150
SMA-J
Small suction antenna, cost-effective
9.2 Antenna Interface Choosing
The module has two antenna interface modes: IPX and stamp hole. When using the IPEX interface, it is recommended not to connect
that the stamp hole interface.