EWM47-400M20S BC3603 chip solution New SPI Wireless Transmission Module SPI interface Low power Long-distance transmission
[Chip Solution]：BC3603
[Operating Frequency]：410-510MHz
[Transmit Power]：20dBm
[Communication Distance]：3km
[Size]：20 x 14mm
[Weight]：1.5 ± 0.1g
[Introduction]：The EWM47-M series is a low-cost, high-performance wireless transmission module independently developed by Ebyte using the new generation domestic RF chip BC3603. It has a built-in industrial-grade high-precision crystal oscillator, is suitable for 433MHz and 470MHz frequency bands, and supports multiple modulation methods such as OOK and GFSK, meeting the needs of users in smart homes, wireless meter reading, scientific research and medical treatment, as well as medium and long-distance wireless communication equipment.
Official Store| RF parameters | unit | Parameter value | Remark | |
| Transmit power | dBm | 20dBm | Support software multi-level adjustable | |
| Reference distance | m | 3000 m | Clear and open air, antenna gain 5dBi, antenna height 2.5 meters, air data rate 2.4kbps | |
| Operating frequency band | MHz | 410～510MHz | Factory default 433MHz, supports ISM band | |
| Air speed | bps | 2K bps ～250K bps | User programmable control | |
| Electrical parameters | unit | Parameter value | Remark | |
| Operating voltage | In | 1.8～3.6 | When
the operating voltage is ≥3V, it can meet the output power
requirements. When the operating voltage exceeds 3.6V, there is a risk
of burning. | |
| Communication level | In | 3.3 | Using 5V TTL may cause burnout | |
| Power consumption | Emission current | m.a. | 100 | Instantaneous power consumption |
| Receive current | m.a. | 8.2 | ||
| temperature | Operating temperature | ℃ | -40～+85 | Industrial grade |
| Storage temperature | -40～+125 | |||
| Hardware Parameters | Parameter value | Remark |
| chip | BC3603 | - |
| FIFO | 256Byte | Maximum length of a single transmission |
| Modulation method | GFSK/OOK | - |
| Interface | stamp holes | Pitch 1.27mm |
| Communication interface | SPI | The reference SPI rate is 3M |
| Product Net Weight | 1.5g | Tolerance tester 0.02g |
| Packaging | patch | |
| Antenna interface | IPEX generation/stamp hole | Characteristic impedance about 50 ohms |
| size | 20*14mm | ±0.2mm |