Chengdu Ebyte Electronic Technology Co,;Ltd E30 -490T20S user manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co,;Ltd
4
2 Specification and parameter
2.1 Limit parameter
Main parameter
Performance
Notes
Min.
Max.
Power supply
（
V
）
0
5.2
Voltage over 5.2V 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
Notes
Min
Typ.
Max.
Operating voltage
（
V
）
2.3
3.3
5.2
≥3.3V ensures output power
Communication level
（
V
）
3.3
For 5V TTL, it may be at risk of
burning down
Operating temperature
（
℃
）
-40
-
85
Industrial design
Operating frequency
（
MHz
）
470
-
500.5
Support ISM band
Power
consumption
Transmitting current [mA]
89
Instant power consumption
Receiving current [mA]
16
Turn-off current [μA]
4
Software is shut down
Max Tx power
（
dBm
）
19.4
20.0
20.5
Receiving sensitivity
（
dBm
）
-120
-121
-122
Air data rate is 1.0kbps
Air data rate
（
bps
）
1k
5k
25k
Controlled via user’s programming
Main parameter
Description
Notes
Distance for reference
2500m
Test condition
：
clear and open area, antenna gain: 5dBi
，
antenna height: 2.5m
，
air data rate: 1.0kbps
TX length
58 Byte
M aximum capacity of single package,
automatic sub-
packing after exceeding.
Buffer
512 Byte
M odulation
GFSK
Communication interface
TTL
@3.3V
Package
SM D
Connector
2.00mm
