Home >Module>SPI/SOC/UART>SX12**
wireless serial port module UART TTL level output compatible with 3.3V and 5V IO port voltage

[IC]:SX1268

[Frequency]:410.125~493.125MHz

[Power]:22dBm

[Distance]:5km

[Size]:21*36mm

[Weight]:6.7±0.2g

[Introduction]:E22-400T22D is a wireless serial port module (UART) based on SEMTECH's SX1268 RF chip. It has multiple transmission modes, working in the 410.125MHz~493.125MHz, frequency (default 433.125MHz), LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltage.

1
No. Name Direction Function
1 M0 Input(weak pull-up) Work with M1 to decide 4 working modes of module (not suspended, if not used, could be grounded).
2 M1 Input(weak pull-up) Work with M0 to decide 4 working modes of module (not suspended, if notused, could be grounded).
3 RXD Input TTL UART input, connects to external TXD output pin.
4 TXD Output TTL UART output, connects to external RXD input pin.
5 AUX Output To indicate module ’s working status & wakes up the external MCU. Duringthe procedure of self-check initialization, the pin outputs low level.
6 VCC Power supply Module power supply positive reference, voltage range: 2.3 ~ 5.5V DC
7 GND Power supply Ground
8 Fixed hole - Fixed hole(Connect to GND on the module)
9 Fixed hole   - Fixed hole(Connect to GND on the module)
10 Fixed hole - Fixed hole(Connect to GND on the module)