Ebyte E49-400M20S Wireless data transmission module pure hardware module to develop and use
[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.
Official StoreLimit 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 |