Chengdu Ebyte Electronic Technology Co., Ltd
E49-900T20S User Manual
Copyright ©2012–2021
,
Chengdu Ebyte Electronic Technology Co.,Ltd.
5
2. Specification and parameter
2.1 Limit parameter
Main parameter
Performance
Remark
Min.
Max.
Power supply
(
V
)
0
5.5
Voltage over 5.5V 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
Remark
Min.
Typ.
Max.
Operating voltage
(
V
)
2.6
5
5.5
Over 5.5V will permanently damage
module
Communication level
(
V
)
3.3
For 5V TTL, it may be at risk of burning
down
Operating temperature
(
℃
)
-40
-
80
Industrial design
Operating frequency
(
MHz
)
850
868
930
Support ISM band
Power
consumption
TX current
(
mA
)
97.9
Instant power consumption
RX current
(
mA
)
12.04
Sleep current
(
μA
)
1.3
Software is shut down
Max Tx power
(
dBm
)
-
-
20.0
Receiving sensitivity
(
dBm
)
-114
-115
-116
Air data rate is1.2kbps
Air data rate
(
bps
)
1.2k
2.4k
200k
Controlled via user’s programming
Main parameter
Description
Remark
Distance for reference
2500m
Test condition
:
clear and open area, antenna gain:
5dBi,antenna height:2.5m
,
air data rate:1.2kbps
FIFO
54 Byte
Maximum capacity of single transmission, auto-sub-packing
when exceeding
Cache capacity
500 Byte
Modulation
GFSK
Communication interface
UART serial port
Package
SMD
Connector
1.27mm
Size
26*16mm
Antenna
IPEX/Stamp hole
50 ohm impedance