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Chengdu Ebyte Electronic Technology Co., Ltd.
Manual
E28-2G4M12S User
Copyright ©2012–2020
,
Chengdu Ebyte Electronic Technology Co.,Ltd.
1-4
Automotive industry applications.
2.
Specification and parameter
2.1 Limit parameter
Main parameter
Model
Remark
E28-2G4M12S
E28-2G4M12SX
Power supply
(
V
)
0~3.6
0~3.6
Voltage over 3.6V will cause permanent
damage to module
Blocking power
(
dBm
)
10
10
Chances of burn is slim when modules are
used in short distance
Operating temperature
(
℃
)
-40~+85
-40~+85
-
2.2 Operating parameter
Main parameter
Model
Remark
E28-2G4M12S
E28-2G4M12SX
Operating voltage
(
V
)
1.8~3.6
1.8~3.6
≥3.3 V ensures output power
Communication level
(
V
)
3.3
3.3
For 5V TTL, it may be at risk of burning down
Operating temperature
(
℃
)
-40~+85
-40~+85
Industrial design
Operating frequency
(
MHz
)
2400~2500
2400~2500
Support ISM band
Power
consumpti
on
TX current
(
mA
)
45
45
Instant power consumption
RX current
(
mA
)
10
10
-
Sleep current
(
μA
)
2.0
2.0
Software is shut down
Max Tx power
(
dBm
)
12~14
12~14
-
Receiving sensitivity
(
dBm
)
-128~-130
-128~-130
air data rate:595kbps
Air data rate
LoRa24
(
bps
)
0.595k~253.9k 0.595k~253.9k
Programming
FLRC
(
bps
)
260k
1.3M
Programming
FSK
(
bps
)
125k~2M
125k~2M
Programming
Main parameter
Description
Remark
Model
E28-2G4M12S
E28-2G4M12SX
Distance for reference
3000m
3000m
Test condition
:
clear and open area, antenna gain:
5dBi
,
antenna height: 2.5m
,
air data rate: 595kbps
FIFO
256Byte
256Byte
Max length transmitted each time
Crystal frequency
52MHz
52MHz
-
Modulation
LoRa
TM
(recommen
ded)
LoRa
TM
(recomm
ended)
GFSK Mode
,
FLRC Mode
,
LoRa Mode
Package
SMD
SMD
-
Connector
1.27mm
1.27mm
IPEX/PCB