[Interface Type]：UART Serial Port
[Operating Frequency]：2400–2480 MHz
[Transmit Power]：27 dBm
[Communication Range]： 1.6 km
[Size]：20 * 14 mm
[Introduction]：The EWM521-2G4NW27SX is a wireless serial MESH networking module operating in the 2.4GHz ISM band. It features a maximum output power of 27dBm, a peak over-the-air data rate of 2Mbps, and a maximum supported baud rate of 115200bps, operating within the 2400–2480MHz frequency range. Utilizing advanced MESH networking technology, the module offers capabilities such as decentralization, self-routing, network self-healing, and multi-hop routing. It is suitable for applications including smart home systems, industrial sensors, wireless security and alarm systems, building automation solutions, and smart agriculture.
Official Store| Main parameters | performance | Remark | |
| Minimum value | Maximum value | ||
| power supply voltage | 0V | 5.5V | ≥5.0V guarantees output power; voltages exceeding 5.5V may burn out the module. |
| Operating temperature | -40℃ | +85℃ | Industrial-grade design |
| Operating humidity | 10% | 90% | - |
| Storage temperature | -40℃ | +125℃ | - |
| Main parameters | performance | Remark | |||
| Minimum value | Typical value | Maximum value | |||
| Operating voltage (V) | 3.3 | 5.0 | 5.5 | ≥5.0V guarantees output power; voltages exceeding 5.5V may burn out the module . | |
| Communication level (V) | 3.3 | When using 5.0V TTL, it is recommended to add a level converter. | |||
| Operating temperature (°C) | -40 | - | +85 | Industrial-grade design | |
| Operating frequency band (MHz) | 2400 | - | 2480 | Supports ISM band | |
| achievement Consumption | Emitting current (mA) | - | 600 | - | Instantaneous power consumption |
| Operating current (mA) | - | 30 | - | - | |
| Transmit power (dBm) | - | 27 | 28 | Users can configure it themselves. | |
| Air speed (bps) | 250K | 500K | 1M | Four air speed options are available (250K, 500K, 1M, 2M). | |
| Main parameters | describe | Remark |
| Reference distance | 0.8 Km | In a clear, open environment, with an antenna gain of 3.5 dBi, an antenna height of 2.5 meters, and an air speed of 7 Kbps... |
| Subcontracting | 32 Btye | Maximum capacity per package; exceeding the maximum capacity is prohibited. |
| Modulation method | FSK | - |
| Communication interface | UART serial port | 3.3V TTL level |
| Packaging method | surface mount | - |
| External dimensions | 20*14mm | ±0.2 mm |
| Antenna Interface | IPEX/Stamp Hole | Characteristic impedance approximately 50Ω |
| weight | 1.3g | ±0.1g |