[Type d'interface]:Port série UART
[Fréquence]: 2400–2480 MHz
[Puissance d'émission]:20 dBm
[Portée de communication]: 0,8 km
[Dimensions]:20*14mm
[Introduction]:Le EWM521-2G4NW20SX est un module de réseau MESH série sans fil fonctionnant dans la bande ISM 2,4 GHz. Il offre une puissance de sortie maximale de 20 dBm, un débit de données radio (air) de pointe de 2 Mbit/s et un débit en bauds maximal pris en charge de 115 200 bit/s, le tout dans une plage de fréquences de 2400 à 2480 MHz. Grâce à une technologie de réseau MESH avancée, le module prend en charge des fonctionnalités telles que la décentralisation, le routage autonome, l'auto-cicatrisation du réseau et le routage multi-sauts. Il convient à diverses applications, notamment la domotique, les capteurs industriels, les systèmes d'alarme de sécurité sans fil, l'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 | EWM521-2G4NW20SX is not currently in use; NC is recommended. |
| 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 |