E29-400T22S long range Wireless Serial Port Transmission uart module modules Spread Spectrum 433mhz receiver transmitter
[Transmission power]：22dBm
[Communication distance]： 5km
[Air rate]：2.4k～16.4kbps
[Product size]：20*16mm
[Introduction]：Based on PANCHIP’s RF chip PAN3031,the E29-T series products are a new generation of wireless serial port module(UART)independently developed by Chengdu Ebyte Electronics Co., Ltd.It’s with a variety of transmission methods,working in the frequency band 410.125～ 493.125MHz (default 433.125MHz),and using industrial-grad high-precision 32MHz crystal oscillator.
| Pin No. | Pin Name | Pin Direction | Pin Function |
| 1 | GND | - | Module ground |
| 2 | GND | - | Module ground |
| 3 | GND | - | Module ground |
| 4 | GND | - | Module ground |
| 5 | M0 | Input （pull-up) | Work with M1 to decide 4 working modes of module (not float, if not used, could be grounded) |
| 6 | M1 | Input （pull-up） | Work with M0 to decide 4 working modes of module (not float, if not used, could be grounded) |
| 7 | RXD | Input | TTL UART inputs, connects to external TXD output pin |
| 8 | TXD | Output | TTL UART outputs, connects to external RXD input pin |
| 9 | AUX | Output | Used to indicate the working status of the module; For user to wakes up the external MCU and it outputs low level during power-on self-check initialization; (can be left floating) |
| 10 | VCC | - | Module power positive reference, voltage range: 2.6～5.5V DC |
| 11 | GND | - | Module ground |
| 12 | RST | - | Module Reset pin |
| 13 | GND | - | Module ground |
| 14 | SWDI0 | - | - |
| 15 | VDD | - | 3.3V |
| 16 | RS485 | - | RS485 enable |
| 17 | PA-RXEN | - | NC |
| 18 | PA-TXEN | - | NC |
| 19 | GND | - | Module ground |
| 20 | GND | - | Module ground |
| 21 | ANT | - | Antenna |
| 22 | GND | - | Module ground |