[Type d'interface]: Port série UART
[Fréquence]:2400–2480 MHz
[Puissance d'émission]:27 dBm
[Portée de communication]:1,6 km
[Dimensions]:20*14mm
[Introduction]:L'EWM521-2G4NW27SX est un module de réseau maillé (MESH) série sans fil fonctionnant dans la bande ISM 2,4 GHz. Il offre une puissance de sortie maximale de 27 dBm, un débit de données radio de pointe de 2 Mbit/s et une vitesse de transmission maximale de 115 200 bit/s, tout en opérant dans la plage de fréquences 2400–2480 MHz. Grâce à une technologie de réseau maillé avancée, ce module propose des fonctionnalités telles que la décentralisation, l'auto-routage, l'auto-cicatrisation du réseau et le routage multi-sauts. Il est adapté à diverses applications, notamment les systèmes de domotique, les capteurs industriels, les systèmes de sécurité et d'alarme sans fil, les solutions d'automatisation des bâtiments et l'agriculture intelligente.


| Pin number | Pin Name | Pin direction | Pin Applications |
| 1 | PB4 | Input/Output | Not yet in use, NC recommended |
| 2 | PB7 | Input/Output | RF transmit indicator pin, high level by default, active low (connected to LED1 in the test kit). |
| 3 | NC | Input/Output | Not yet in use, NC recommended |
| 4 | NC | Input/Output | Not yet in use, NC recommended |
| 5 | NC | Input/Output | Not yet in use, NC recommended |
| 6 | NC | Input/Output | Not yet in use, NC recommended |
| 7 | PC1 | Input/Output | Not yet in use, NC recommended |
| 8 | NC | Input/Output | Not yet in use, NC recommended |
| 9 | PB6 | Input/Output | UART_TXD, serial port transmit pin |
| 10 | PB5 | Input/Output | UART_RXD, serial port receive pin |
| 11 | PC0 | Input/Output | Not yet in use, NC recommended |
| 12 | NC | Input/Output | Not yet in use, NC recommended |
| 13 | GND | Input/Output | Ground wire, connected to power reference ground |
| 14 | ON | Input/Output | Antenna interface, 50Ω characteristic impedance (connects to the SMA interface of the test kit). |
| 15 | GND | Input/Output | Ground wire, connected to power reference ground |
| 16 | NC | Input/Output | Not yet in use, NC recommended |
| 17 | RESET | enter | Reset pin, high level by default, active low (connected to the RST button on the test kit). |
| 18 | NC | Input/Output | Not yet in use, NC recommended |
| 19 | NC | Input/Output | Not yet in use, NC recommended |
| 20 | NC | Input/Output | Not yet in use, NC recommended |
| 21 | NC | Input/Output | Not yet in use, NC recommended |
| 22 | PD4 | Input/Output | The EWM521-2G4NW27SX internally uses this pin and must be NC-compatible. |
| 23 | PB3 | Input/Output | Not yet in use, NC recommended |
| 24 | PD6 | Input/Output | Not yet in use, NC recommended |
| 25 | PD7 | Input/Output | Not yet in use, NC recommended |
| 26 | PA7 | Input/Output | Not yet in use, NC recommended |
| 27 | GND | Input/Output | Ground wire, connected to power reference ground |
| 28 | VDD | enter | Power supply VDD, power supply design according to different models |
| 29 | SWS | - | Debug pin |
| 30 | PB2 | - | Not yet in use, NC recommended |