Home >Module>SPI/SOC/UART>AX5243
E31-433T30S Ebyte AX5243 UART 6Km Low Frequency High Diffraction 433MHz 30dBm SMD 25*40.5mm LoRa Wireless Transmitter RF Module

[IC]:AX5243

[Frequency]:425~450.5MHz

[Power]:30dBm

[Distance]:8.6km

[Interface]:UART

[Weight]:5.1±0.1g

[Introduction]:E31-433T30S is a wireless transceiver module based on AX5243 from AXSEM(can be transmitter and receiver).The module uses FEC (forward error correction) algorithm,which greatly improve the anti-interference ability.

E31-433T30S
Pin No. Pin Item Pin Direction Pin Application
1 M0 Input(weak pull-up) Work with M1 & decide the four operating modes;Floating is not allowed, can be ground.
2 M1 Input(weak pull-up) Work with M0 & decide the four operating modes;Floating is not allowed, can be ground.
3 RXD Input TTL UART inputs, connects to external TXD output pin;Can be configured as open-drain or pull-up input.
4 TXD Output TTL UART outputs, connects to external RXD input pin;Can be configured as open-drain or push-pull output.
5 AUX Output To wake up the external MCU, during the procedure of self-check initialization, the pinoutputs low level; Can be configured as open-drain output or push-pull output; Floatingis allowed.
6 VCC - Voltage positive reference of module; Power supply 3.3V ~ 5.2V DC.
7 GND - Ground.
8 RESET Input Reset pin when the program is loaded (floating, no need to be connected).
9 GND - Power ground when the program is loaded (floating, no need to be connected).
10 SWIM Input SWIM pin when the program is loaded (floating, no need to be connected).
11 +3.3V - Power pin when the program is loaded (floating, no need to be connected).
12 PD3 Input/Output NC pin, which needs to be floating, users do not need to connect (for later expansion).
13 PD2 Input/Output NC pin, which needs to be floating, users do not need to connect (for later expansion).
14 PD1 Input/Output NC pin, which needs to be floating, users do not need to connect (for later expansion).
15 GND - Fixing hole.
16 GND - Fixing hole.
17 GND - Fixing hole.
18 ANT Output Antenna.