Ebyte high quality UART wireless modules for meter reading smart home smart agriculture industrial control
[IC]：SX1278
[Frequency]：410~525MHz
[Power]：10~20dBm
[Distance]：3.0km
[Interface]：UART
[Weight]：2.1±0.1g
[Introduction]：E32-400T20S is a wireless serial port module developed by EBYTE for the wireless meter reading industry. LoRa spread spectrum solution, with air wake up function (low power consumption), factory default 470MHz meter reading frequency band, long subcontracting mode (197 bytes per package), can meet the application of the meter reading industry.
| RF Parameter | Value | Remark |
| Working frequency | 410~525 MHz | Default: 470MHz |
| Transmitting power | 10~20 dBm | Default: 20dBm（About 100mW） |
| Receiving sensitivity | -146 dBm | Air data rate: 0.3kbps |
| Air data rate | 0.3k~19.2kbps | Default: 2.4kbps |
| Test distance | 3000 meter | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 2.4kbps |
| Hardware Parameter | Value | Remark |
| Size | 16 * 26 mm | |
| Antenna type | IPX / Stamp hole | |
| Communication interface | UART | Baud rate: 1200~115200, default: 9600 |
| Package | SMD | |
| Buffer | 512 bytes buffer | Automatically sub-packaging with 197 bytes per package |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 2.6 | 5.0 | 5.2 | V | |
| Communication level | - | 3.3 | - | V | |
| Transmitting current | 96 | 106 | 116 | mA | 20dBm（100mW） |
| Receiving current | 14 | 15 | 16 | mA | |
| Sleep current | 3 | 4 | 5 | μA | |
| Operating temperature | -40 | 20 | +85 | ℃ | |
| Operating humidity | 10 | 60 | 90 | % | |
| Storage temperature | -40 | 20 | +125 | ℃ |