E49-400M20S4 Ebyte wireless data transmission Pure hardware module Low output power SPI communication interface
[IC]：CMT2300A
[Frequency]：410~510MHz
[Power]：20dBm
[Distance]：2.5km
[Size]：16*16mm
[Product weight]：0.9±1g
[Introduction]：E49-400M20S4 is a cost-efective wireless data transmission module launched by Chengdu Ebyte. It is a pure hardware module based on CMT2300A.E49- 400M20S4 supports a maximum transmit power of 30dBm, and users can set a lower output power to save power consumption. The module works in the .433/470MHz frequency band. With small size and low power consumption. Since this module is a pure RF transceiver module, it needs to be driven by an MCU or adedicated SPI debugging tool.
Official Store| Main parameter | Min. | Max. | Remark |
|---|---|---|---|
| Power supply（V） | 0 | 3.6 | Voltage over 3.6V will cause permanent damage to module |
| Blocking power（dBm） | - | 10 | Chances of burn is slim when modules are used in short distance |
| Operating temperature（℃） | -40 | +85 | Industrial |
| Main parameter | Min | Type | Max | Remark |
|---|---|---|---|---|
| Operating voltage（V） | 1.8 | 3.3 | 3.6 | Over 3.6V may permanently burn the module |
| Communication level（V） | - | 3.3 | - | - |
| Operating temperature（℃） | -40 | - | +85 | Industrial grade |
| Operating frequency（MHz） | 410 | 433 | 510 | - |
| TX current（mA） | - | 85 | - | - |
| RX current（mA） | - | 8.5 | - | - |
| Sleep current （μA） | - | 1 | - | DutyCycle=OFF,300nA;DutyCycle=ON,800nA |
| Max TX power（dBm） | - | 20 | - | - |
| Receiving sensitivity（dBm） | -116 | -117 | -118 | Air data rate is 1.2kbps |
| Main parameter | Description | Remark |
|---|---|---|
| Reference distance | 2500m | Clear and open, antenna height 2.5 meters, air rate 2.4kbps |
| Crystal Oscillator | 26MHz | - |
| Package | SMD | - |
| Interface | SPI | 3 lines SPI |
| Size | 16*16mm | - |
| RF interface | Stamp | Equivalent impedance is about 50Ω |