E220-400T22S LLCC68 LoRa Wireless RF Module 22dBm ISM band 433MHz LoRa Spread Spectrum SMD IPEX Antenna Anti-interference
[IC]：LLCC68
[Frequency]：410.125~493.125MHz
[Power]：22dBm
[Distance]：5km
[Size]：16*26mm
[Product weight]：2.2g±0.1g
[Introduction]：E220-400T22S is a new generation of LoRa wireless serial port module (UART), based on Semtech's original LLCC68 chip design. It has a variety of transmission methods, works in the (410.125～493.125MHz) frequency band (default 433.125MHz), LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltage
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| No. | Name | Direction | Features |
| 1 | NC | - | Empty feet |
| 2 | GND | - | Module ground wire |
| 3 | NC | - | Empty feet |
| 4 | NC | - | Empty feet |
| 5 | NC | - | Empty feet |
| 6 | NC | - | Empty feet |
| 7 | NC | - | Empty feet |
| 8 | GND | - | Module ground wire |
| 11 | GND | - | Module ground wire |
| 12 | ANT | - | antenna |
| 13 | GND | - | Module ground wire |
| 14 | GND | - | Module ground wire |
| 15 | GND | - | Module ground wire |
| 16 | GND | - | Module ground wire |
| 19 | GND | - | Module ground wire |
| 20 | M0 | Input (very weak pull-up) | Cooperate with M1 to determine the 4 working modes of the module (cannot be left floating, can be grounded if not used) |
| 21 | M1 | Input (very weak pull-up) | Cooperate with M0 to determine the 4 working modes of the module (cannot be left floating, can be grounded if not used) |
| 22 | RXD | Input | TTL serial port input, connected to the external TXD output pin; |
| 23 | TXD | output | TTL serial port output, connected to the external RXD input pin; |
| 24 | AUX | output | Used to indicate the working status of the module; |
| The user wakes up the external MCU and outputs low level during power-on self-test initialization; (can be left floating) | |||
| 25 | VCC | - | Module power supply positive reference, voltage range: 2.3~5.5V DC |
| 26 | GND | - | Module ground wire |