[Frequency]:433MHz
[Power]:22dBm
[Size]:16*26mm
[Weight]:2.3±0.1g
[Introduction]:E22-400T22S is a wireless serial port module (UART) based on SEMTECH's LoRa solution radio frequency chip. It has a variety of transmission modes, working at 410.125MHz~493.125MHz, (default 433.125MHz), LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltages.
No. | Name | Direction | Function |
---|---|---|---|
1 | NRST | Input | Module reset pin, low reset |
2 | GND | - | Ground |
3 | NC | - | empty |
4 | NC | - | empty |
5 | NC | - | empty |
6 | NC | - | empty |
7 | NC | - | empty |
8 | GND | - | Ground |
11 | GND | - | Ground |
12 | ANT | - | Antenna |
13 | GND | - | Ground |
14 | GND | - | Ground |
15 | GND | - | Ground |
16 | GND | - | Ground |
19 | GND | - | Ground |
20 | M0 | Input(weakpull-up) | Work with M1 to decide 4 working modes of module (not suspended, if notused, could be grounded). |
21 | M1 | Input(weakpull-up) | Work with M0 to decide 4 working modes of module (not suspended, if notused, could be grounded). |
22 | RXD | Input | TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can beconfigured as open-drain or pull-up input. |
23 | TXD | Output | TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can beconfigured as open-drain or push-pull output |
24 | AUX | Output | To indicate module ’ s working status & wakes up the external MCU. During theprocedure of self-check initialization, the pin outputs low level. Can beconfigured as push-pull output (suspending is allowed). |
25 | VCC | - | Power supply :2.3~ 5.2V DC |
26 | GND | - | Ground |