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E22-400T22D wireless serial port module UART TTL level output compatible with 3.3V and 5V IO port voltage

[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 LoRa solution. It has a variety of transmission modes, working at 410.125MHz~493.125MHz, frequency (default 433.125MHz), LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltage.

22D
Serial Number
pin Pin direction Remark
1 M0
Input (very weak pull-up)

In conjunction with M1, it determines the module's four operating modes (it cannot be left floating; if not in use, it can be grounded).

2 M1 Input (very weak pull-up)

In conjunction with M0, it determines the module's four operating modes (it cannot be left floating; if not in use, it can be grounded).

3 RXD Input

TTL serial port input, connected to the external TXD output pin;

4 TXD Output

TTL serial port output, connected to the external RXD input pin;

5 TO Output

Used to indicate the module's working status;

When the user wakes up the external MCU, it outputs a low level during the power-on self-test initialization period; (this level can be left floating).

6 VCC Input

Module power supply positive reference, voltage range: 3.0~5.5V DC

7 GND Input

Module ground wire

8 Fixing hole

Mounting hole (connected to GND on the module)

9 Fixing hole

Mounting hole (connected to GND on the module)

10 Fixing hole

Mounting hole (connected to GND on the module)