E29-400T22D long range Wireless Serial Port Transmission uart module TTL Spread Spectrum 433mhz receiver transmitter
[Transmission power]：22dBm
[Communication distance]： 5km
[Air rate]： 2.4k～16.4kbps
[Product size]：36*21mm
[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 | M0 | Input （pull-up) | Work with M1 to decide 4 working modes of module (not float, if not used, could be grounded) |
| 2 | M1 | Input （pull-up) | Work with M0 to decide 4 working modes of module (not float, if not used, could be grounded). |
| 3 | RXD | Input | TTL UART inputs, connects to external TXD output pin |
| 4 | TXD | Output | TTL UART outputs, connects to external RXD input pin |
| 5 | 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) |
| 6 | VCC | Power supply | Module power positive reference, voltage range: 2.6～5.5V DC |
| 7 | GND | Power supply | Module ground |
| 8 | Fixed hole | - | Fixed hole （connect with module GND） |
| g | Fixed hole | - | Fixed hole （connect with module GND） |
| 10 | Fixed hole | - | Fixed hole （connect with module GND） |