| RF Parameter | Value | Remark |
| Working frequency | 425 - 440.5 MHz | Default: 433.0MHz, channel:32 |
| Transmitting power | Maximum 12dBm | Eight optional level(12, 9, 6, 3, 0, -3, -6, -9dBm) |
| Receiving sensitivity | -110dBm@2kbps | Sensitivity has nothing to do with serial baud rate or timing |
| Air data rate | 2kbps~15kbps | Four optional level (2, 5, 10, 15kbps) |
| Test distance | 1000 meter | Test condition ： clear and open area& 12dBm, antenna gain: 5dBi， height:> 2m，air data rate: 2kbps |
| Hardware Parameter | Value | Remark |
| Size | 21 * 36 mm | Without SMA |
| Antenna type | SMA-K | 50 Ω characteristic impedance, selected from 0R resistor |
| Communication interface | UART | 8N1, 8E1, 8O1， Eight kinds of UART baud rate, from 1200 to 115200 bps |
| Package | DIP | - |
| Buffer | 512 bytes buffer | 58 bytes per package |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 2.3 | 5.0 | 5.2 | V | - |
| Communication level | - | - | 5.2 | V | - |
| Transmitting current | - | 55mA | - | mA | ≥150mA (recommended) |
| Receiving current | - | 3.0 | - | mA | Mode 0 or Mode 1 |
| Sleep current | - | 2.0 | - | μA | - |
| Operating temperature | -40 | - | +85 | ℃ | - |
| Operating humidity | 10 | - | 90 | % | - |
| Storage temperature | -40 | - | +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 (MCU, PC) output pin. Can be configured as open-drain or pull-up input |
| 4 | TXD | Output | TTL UART outputs, connects to external RXD (MCU, PC) input pin. |
| 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 | Input | Power supply 2.3V-5.5V DC |
| 7 | GND | Input | Ground |
| 8 | Fixing hole | - | Fixing hole |
| 9 | Fixing hole | - | Fixing hole |
| 10 | Fixing hole | - | Fixing hole |
| Order online |
| 【eBay】：https://www.ebay.com/usr/cdebyte |
| 【Aliexpress】：https://cdebyte.pt.aliexpress.com |
| 【amazon】：https://www.amazon.co.uk |
| 【Alibaba】：https://www.alibaba.com |
| For batch order/customized product |
| 【Sales hotline】：+86-28-61399028 Ext.812 |
| 【E-mail】：service@cdebyte.com |
| Technical support |
| 【Submit online】：http://www.ebyte.com/en/apple-technology.aspx |
| 【E-mail】：support@cdebyte.com |
| Model | IC | Interface | Frequency Hz | Power dBm | Distance km | Air data rate | Package | Size (mm) | Feature | Manual | Sample |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E33-433T13D | UART | SX1212 | 433M | 13 | 0.8 | 2k~15k | DIP | 21 * 36 | 单点唤醒，超低接收电流 |
