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wireless serial port module
TTL level output
wireless serial port module
TTL level output
E220-900T22D LoRa Wireless UART Module RSSI ISM 868MHz 915MHz 22dBm Module LoRa Spread Spectrum UART Interface SMA-K Antenna

[Chip solution]：LLCC68

[Frequency]：850.125~930.125MHz

[Transmitter power]：22dBm

[Communication diatance]：5km

[Size]：21*36mm

[Product weight]：7.5g±0.1g

[Introduction]：E220-900T22D adopts a new generation of LoRa spread spectrum technology and a wireless serial port module (UART) designed based on the LLCC68 chip scheme. It has a variety of transmission methods, works in the (850.125 ～ 930.125MHz) frequency band(default 873.125MHz), TTL level output, compatible with 3.3V and 5V IO port voltage

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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)

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