[IC] : AX5243
[Frequency] : 425~450.5MHz
[Power] : 30dBm
[Distance] : 8.6km
[Interface] : UART
[Weight] : 5.1±0.1g
[Introduction] : E31-433T30S is a wireless transceiver module based on AX5243 from AXSEM(can be transmitter and receiver).The module uses FEC (forward error correction) algorithm,which greatly improve the anti-interference ability.
| RF Parameter | Value | Remark |
| Working frequency | 425~450.5 MHz | Support ISM band. |
| Transmitting power | 30 dBm | About 1W |
| Receiving sensitivity | -123 dBm | Air data rate: 1.2kbps |
| Air data rate | 1.2k~70kbps | User programming control |
| Test distance | 8600米 | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 1.2kbps |
| Hardware Parameter | Value | Remark |
| Size | 25 * 40.5 mm | |
| Antenna type | IPEX / Stamp hole | The equivalent impedance is about 50Ω. |
| Communication interface | UART | Baud rate: 1200~115200, default: 9600 |
| Package | SMD |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 3.3 | 5.0 | 5.5 | V | |
| Communication level | - | 3.3 | - | V | |
| Transmitting current | 580 | 600 | 650 | mA | Instant power consumption |
| Receiving current | - | 22 | - | mA | |
| Sleep current | - | 2 | - | μA | Software turn off |
| Operating temperature | -40 | 20 | +85 | ℃ | |
| Operating humidity | 10 | 60 | 90 | % | |
| Storage temperature | -40 | 20 | +125 | ℃ |
| Pin No. | Pin Item | Pin Direction | Pin Application |
| 1 | M0 | Input (weak pull-up) | Work with M1 & decide the four operating modes; Floating is not allowed, can be ground. |
| 2 | M1 | Input (weak pull-up) | Work with M0 & decide the four operating modes; Floating is not allowed, can be ground. |
| 3 | RXD | Input | TTL UART inputs, connects to external TXD output pin; Can be configured as open-drain or pull-up input. |
| 4 | TXD | Output | TTL UART outputs, connects to external RXD input pin; Can be configured as open-drain or push-pull output. |
| 5 | AUX | Output | To wake up the external MCU, during the procedure of self-check initialization, the pin outputs low level; Can be configured as open-drain output or push-pull output; Floating is allowed. |
| 6 | VCC | - | Voltage positive reference of module; Power supply 3.3V ~ 5.2V DC. |
| 7 | GND | - | Ground. |
| 8 | RESET | Input | Reset pin when the program is loaded (floating, no need to be connected). |
| 9 | GND | - | Power ground when the program is loaded (floating, no need to be connected). |
| 10 | SWIM | Input | SWIM pin when the program is loaded (floating, no need to be connected). |
| 11 | +3.3V | - | Power pin when the program is loaded (floating, no need to be connected). |
| 12 | PD3 | Input/Output | NC pin, which needs to be floating, users do not need to connect (for later expansion). |
| 13 | PD2 | Input/Output | NC pin, which needs to be floating, users do not need to connect (for later expansion). |
| 14 | PD1 | Input/Output | NC pin, which needs to be floating, users do not need to connect (for later expansion). |
| 15 | GND | - | Fixing hole. |
| 16 | GND | - | Fixing hole. |
| 17 | GND | - | Fixing hole. |
| 18 | ANT | Output | Antenna. |
| Model | IC | Interface | Frequency Hz | Power dBm | Distance km | Air data rate | Package | Size (mm) | Feature | Manual | Sample |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E31-433T30S | UART | AX5243 | 433M | 30 | 8.6 | 1.2k~70k | SMD | 25*40.5 | Narrow-band transmission,WOR | ||
| E31-DTU(230N33) | 232/485 | AX5243 | 230M | 33 | 8.0 | 1.2k~70k | Screwing/DB9 | 82*62*25 | Diffraction , WOR | ||
| E31-DTU(230N37) | 232/485 | AX5243 | 230M | 37 | 15 | 1.2k~70k | Screwing/DB9 | 124*105*25 | Diffraction , WOR | ||
| E31-230T33D | UART | AX5243 | 230M | 33 | 8.0 | 1.2k~70k | DIP | 37*60 | Diffraction , WOR | ||
| E31-DTU(230N17) | 232/485 | AX5243 | 230M | 17 | 2.0 | 1.2k~70k | Screwing/DB9 | 82*62*25 | Diffraction , WOR | ||
| E31-DTU(230N27) | 232/485 | AX5243 | 230M | 27 | 5.0 | 1.2k~70k | Screwing/DB9 | 82*62*25 | Diffraction , WOR | ||
| E31-230T17D | UART | AX5243 | 230M | 17 | 2.0 | 1.2k~70k | DIP | 21*36 | Diffraction , WOR | ||
| E31-433T17S | UART | AX5243 | 433M | 17 | 2.0 | 1.2k~70k | SMD | 17*30 | Narrow-band transmission |
