[IC]： CMT2300A
[Frequency]：410~510MHz
[Power]：20dBm
[Distance]：2.5km
[Size]：20*14mm
[Weight]：1.2±0.1g
[Introduction]：E49-400M20S is a cost-effective wireless data transmission module launched by Chengdu Ebyte. It is a pure hardware module based on CMT2300A. E49-400M20S supports a maximum transmit power of 20dBm, and users can set a lower output power to save power consumption.
Limit Parameters
| Main Parameters | Performance | Remarks | |
| Min. | Max | ||
| Power supply（V） | 2.6 | 3.6 | Voltage over 3.6V will cause permanentdamage to module |
| Operating temperature（℃） | -40 | 85 | / |
Operating parameter
| Main Parameters | Performance | Remarks | ||
| Min. | Typical | Max | ||
| Operating voltage（V） | 1.8 | 3.3 | 3.6 | Over 3.6V may permanently burn the module |
| Communication level（V） | - | 3.3 | - | Using 5V level has the risk of burning |
| Operating temperature（℃） | -40 | - | +85 | Industrial design |
| Operating frequency（MHz） | 410 | 433 | 510 | - |
| TX Current(mA) | - | 85 | @Transmit power20dBm | Instant power consumption |
| RX current（mA） | - | 8.5 | - | - |
| Sleep current（nA） | 300 | 300 | 800 | Software is shut down |
| Max Tx power（dBm） | - | 20 | - | - |
| Receiving sensitivity（dBm） | -116 | -117 | -118 | @Air rate is 1.2kbps |
| Main parameter | Description | Remarks |
| Reference distance | 2.5km | Clear and open, antenna height 2.5 meters, air rate 2.4kbps |
| Crystal frequency | 26MHz | - |
| Packaging method | SMD | - |
| Communication Interface | SPI | - |
| Dimensions | 20*14mm | - |
| RF interface | IPEX/stamp hole | Equivalent impedance is about 50Ω |
| product weight | 1.2±0.1g | Clear and open, antenna height 2.5 meters, air rate 2.4kbps |
| No. | Name | Direction | Function |
| 1~4 | GND | - | Ground wire, connect to power reference ground |
| 5~7 | GPIO1~3 | DI/O | Configurable multi-function IO port (see CMT2300Amanual for details) |
| 8 | VCC | - | Module power supply, connect to power supply +3.3V |
| 9~10 | GND | - | Ground wire, connect to power reference ground |
| 11 | SCLK | DI | SPI clock pin |
| 12 | SDIO | DI/O | SPI data pins |
| 13 | CSB | DI | Chip select for SPI access register |
| 14 | FCSB | DI | Chip select for SPI access to FIFO |
| 15~16 | GND | - | Ground wire, connect to power reference ground |
| 17 | ANT | - | Module RF stamp hole interface, equivalent impedance is about 50Ω |
| 18 | GND | - | Ground wire, connect to power reference ground |
| Order online |
| 【eBay】：https://www.ebay.com/usr/cdebyte |
| 【Aliexpress】：https://www.aliexpress.com/store/2798183 |
| 【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 |
| 产品 型号 | Interface | IC | Frequency | Power | Distance | Air data rate | Package | Size | Feature | 技术 手册 | 样品 购买 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E49-900T20S | UART | - | 868M 915M | 20 | 2.5 | 1.2k~200k | SMD | 26 * 16 | Low power consumption | ||
| E49-900M20S | SPI | CMT2300A | 868M 915M | 20 | 3 | - | SMD | 20*14 | Low power consumption | ||
| E49-400M20S | SPI | - | 433M 470M | 20 | 2.5 | 0.5Kbps～300Kbps | SMD | 26 * 16 | Low power consumption, high cost performance | ||
| E49-400T20S | UART | - | 433M 470M | 20 | 2.5 | 1.2k~200k | SMD | 26 * 16 | Low power consumption, low cost solution | ||
| E49-400T20D | UART | - | 433M 470M | 20 | 2.5 | 1.2k~200k | DIP | 36*21 | Low power consumption, low cost solution |
