[Chip solution]：SX1262
[Transmission power]：33dBm
[Communication distance]：16km
[Product size]：25*40.5mm
[Introduction]：E22-900T33S is a new generation of LoRa wireless module. It is a wireless serial port module (UART) based on SX1262 radio frequency chip. It has multiple transmission methods and works in the 850.125-930.125MHz frequency band. LoRa spread spectrum technology, TTL level output, compatible with 3.3V And the IO port voltage of 5V. The LoRa module adopts a new generation of LoRa spread spectrum technology. Compared with the traditional SX1276 solution, the SX1262 solution has a longer transmission distance, faster speed, lower power consumption, and smaller size; it supports air wake-up, wireless configuration, carrier monitoring, and automatic relay. , communication key and other functions, support subpackage length setting, and can provide customized development services.
| pin number | pin name | Pin direction | Pin usage |
| 1 | GND | enter | Module ground |
| 2 | VCC | enter | Module power positive reference, voltage range: 3.3 ~ 5.5V DC |
| 3 | AUX | output | Used to indicate the working status of the module; the user wakes up the external MCU, and outputs a low level during the initialization of the power-on self-test; (can be suspended) |
| 4 | TXD | output | TTL serial port output, connected to external RXD input pin; |
| 5 | RXD | enter | TTL serial port input, connected to external TXD output pin; |
| 6 | M1 | Input (very weak pull-up) | Cooperate with M0 to determine the 4 working modes of the module (not floating, if not used, it can be grounded) |
| 7 | M0 | Input (very weak pull-up) | Cooperate with M1 to determine the 4 working modes of the module (not floating, if not used, it can be grounded) |
| 11 | ANT | output | Antenna interface (high-frequency signal output, 50 ohm characteristic impedance) |
| 12 | GND | - | Fixedly |
| 13 | GND | - | Fixedly |
| 14 | GND | - | Fixedly |
| 18 | NC | - | NC pin, this pin needs to be suspended (for subsequent expansion) |
| 19 | NC | - | NC pin, this pin needs to be suspended (for subsequent expansion) |
| 20 | NC | - | NC pin, this pin needs to be suspended (for subsequent expansion) |
| 21 | NC | - | empty feet |
| 22 | NC | - | empty feet |
| 23 | GND | enter | Module ground |
| 24 | NC | - | empty feet |