Chengdu Ebyte Electronic Technology Co.,Ltd. E28-2G4M27S User Manua
l
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
3
2. Technical Parameters
2.1 Limit parameter
Main parameter
Performance
Note
Min
Max
Voltage supply [V]
0
3.6
Voltage over 3.6V will cause permanent damage to module
Blocking power [dBm]
-
10
Chances of burn is slim when modules are used in short distance
Operating temperature [℃]
-40
+85
-
2.2 Operating parameter
Main parameter
Performance
Note
Min
Typ
Max
Voltage supply [V]
2.5
3.3
3.6
≥3.3 V ensures output power
Communication level [V]
3.3
For 5V TTL, it may be at risk of burning down
Operating temperature [℃]
-40
-
+85
-
Frequency [MHz]
2400
2450
2500
ISM band
Power
consumption
Transmitting current
[mA]
580
Instant power consumption
Receiving current
[mA]
14.5
Turn-off current
[μA]
2.0
Software is shut down
Transmitting power [dBm]
26
26.5
27
See more from 4.2
Receiving sensitivity [dBm]
-130
-131
-132
LoRa receiver sensitivity with CR=4/5 and high
sensitivity mode enabled 1
SF12,BW=203kHz
Air data rate
LoRa
（
bps
）
0.595k
-
253.9k
Defined by user via programming
FLRC
（
bps
）
260k
-
1.3M
Defined by user via programming
GFSK
（
bps
）
125k
-
2M
Defined by user via programming
Main parameter
Description
Note
Distance
8000m
Test condition
：
clear and open area, antenna gain: 5dBi
，
antenna
height: 2.5m
，
air data rate: 1kbps
FIFO
256Byte
Max. Transmitting length per packet
Crystal oscillator
52MHz
±
10ppm/11pF
Modulation
LoRa [Recommended]
GFSK
，
FLRC
，
LoRa
Package
SMD
Connector
1.27mm
Interface
SPI
0
～
10Mbps
