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E28-2G4T27SX

[IC]:SX1281

[Frequency]:2.4~2.5GHz

[Power]:27dBm

[Distance] :7km

[Size]:40.5*25mm

[Weight]:4.8±0.1g

[Introduction]:E28-2G4T27SX is an UART module based on SEMTECH SX1281, it adopts transparent transmission and works at 2.4GHz band. It adopts LoRa, FLRC and GFSK modulations. It features SMD packing with both IPX and PCB antenna interfaces, compatible with 3.3V and 5V IO port voltage.

en-E28-2G4T27SX_01

en-E28-2G4T27SX_02

en-E28-2G4T27SX_03

en-E28-2G4T27SX_04

en-E28-2G4T27SX_05

en-E28-2G4T27SX_06

en-E28-2G4T27SX_08


Limit Parameters

Main ParametersPerformanceNote
Min.Max
Power supply(V)2.3 5.5Voltage over 5.5V will cause permanent damage to module
Blocking power [dBm] - 10Chances of burn is slim when modules are used inshort distance
Operating temperature [℃]  -40 +85 -


Operating parameter

Main ParametersPerformanceNote
Min.TypMax
Voltage supply [V]2.3 5.05.5≥5.0V 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] 2400-2500ISM band
Transmitting current[mA]-500-Instant power consumption
Receiving current[mA] -27--
Turn-off current[μA]-10-Software is shut down
Transmitting power [dBm]  26.5 27 27.5-
Receiving sensitivity [dBm]-130-132 -134Air data rate: 115.2Kbps
Air data rate(bps) 1k1k 2MDefined by user via programming


Main parameter DescriptionNote
Distance5000mTest condition:clear and open area, antenna gain: 5dBi,antennaheight: 2.5m,air data rate: 1kbps
FIFO 121 Btye Max. Transmitting length per packet
221 Btye Continuous transmission mode
Cache2048 Byte-
ModulationGFSK-
LoRa-
FLRC-
InterfaceUARTTTL
PackageSMD-
Connector 1.27mm-
Size  40.5*25mm-
Antenna IPEX/Sample hole50Ω Impedance

CH-E28-2G4T27SX-引脚定义

Pin No. Pin Name Pin Direction Function
1 GNDGroundGround
2~7NC-cannot be floated, can be grounded if not used
8 GND Ground Ground
9 NC- cannot be floated, can be grounded if not used
10 GND GroundGround
11 VCC-Module power source positive reference.
Voltage range: 2.5V ~ 5.5V DC
12AUXInputUsed to indicate the module operation status, when user wakes up theexternal MCU,it outputs low level during initialization after power onand self-check, can be configured as open-drain output or push-pulloutput, please refer to Parameter Configuration.(can be floated)
13TXDOutputTTL serial input, connected to external TXD output pin. Can beconfigured as open-drain or pull-up input, please refer to ParameterConfiguration.
14RXD OutputTTL serial input, connected to external TXD output pin;It can be configured as drain open circuit or pull-up input. See parametersetting for details
15 M1InputM2、M1、M0 共同组合决定模块 8 种工作模式
M2, M1 and M0 determine eight working modes
16M0InputM2, M1 and M0 determine eight working modes
17 M2 InputM2, M1 and M0 determine eight working modes
18 GND Ground Ground
19 ANT - Antenna interface (50 Ω characteristic impedance)
20 GNDGroundGround
21 GNDGroundGround
22NC-cannot be floated, can be grounded if not used
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产品
型号
IC Interface Frequency
Hz
Power
dBm
Distance
km
Air
data
rate
Package Size
(mm)
Feature技术
手册
样品
购买
E28-2G4T27SX UART SX1281 2.4G 27 7 1k ~ 2M SMD 40.5*25 LoRa spread spectrum, high-speed continuous transmission
E28-2G4M27S SPI SX1280 2.4G 27 8 0.125M~2M SMD 15 * 26.5 LoRa spread spectrum,FLRC
E28-2G4T12S UART SX1280 2.4G 12.5 3 1k ~ 2M SMD 17.5* 28.7 LoRa spread spectrum
E28-2G4M20S SPI SX1280 2.4G 20 6 0.125M~2M SMD 15 * 26.5 LoRa spread spectrum,FLRC
E28-2G4M12S SPI SX1280 2.4G 12.5 3 0.125M~2M SMD 14*25 LoRa spread spectrum,FLRC
  • E28-2G4T27SX

    产品型号:E28-2G4T27SX

    IC :UART

    Interface :SX1281

    Frequency Hz :2.4G

    Power dBm :27

    Distance km :7

    Air data rate :1k ~ 2M

    Package :SMD

    Size (mm) :40.5*25

    Feature:LoRa spread spectrum, high-speed continuous transmission

    PDF :

    购买:

  • E28-2G4M27S

    产品型号:E28-2G4M27S

    IC :SPI

    Interface :SX1280

    Frequency Hz :2.4G

    Power dBm :27

    Distance km :8

    Air data rate :0.125M~2M

    Package :SMD

    Size (mm) :15 * 26.5

    Feature:LoRa spread spectrum,FLRC

    PDF :

    购买:

  • E28-2G4T12S

    产品型号:E28-2G4T12S

    IC :UART

    Interface :SX1280

    Frequency Hz :2.4G

    Power dBm :12.5

    Distance km :3

    Air data rate :1k ~ 2M

    Package :SMD

    Size (mm) :17.5* 28.7

    Feature:LoRa spread spectrum

    PDF :

    购买:

  • E28-2G4M20S

    产品型号:E28-2G4M20S

    IC :SPI

    Interface :SX1280

    Frequency Hz :2.4G

    Power dBm :20

    Distance km :6

    Air data rate :0.125M~2M

    Package :SMD

    Size (mm) :15 * 26.5

    Feature:LoRa spread spectrum,FLRC

    PDF :

    购买:

  • E28-2G4M12S

    产品型号:E28-2G4M12S

    IC :SPI

    Interface :SX1280

    Frequency Hz :2.4G

    Power dBm :12.5

    Distance km :3

    Air data rate :0.125M~2M

    Package :SMD

    Size (mm) :14*25

    Feature:LoRa spread spectrum,FLRC

    PDF :

    购买:

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