[Interface de communication]:UART
[Fréquence]:863 MHz-928 MHz
[Puissance d’émission]:20 dBm
[Méthode d'emballage]:SMD
[Distance de communication]:3,5 km
[Dimensions]:16 x 26 mm
[Introduction]:L'EWM201-470A20S est un tout nouveau module de transmission audio sans fil longue distance d'Ebyte, doté d'un émetteur et d'un récepteur. Il offre une configuration flexible, une grande simplicité d'utilisation et un format compact. Fonctionnant dans la bande de fréquences de 863 MHz à 928 MHz, il prend en charge l'entrée microphone et la sortie haut-parleur. Il est compatible avec les modes point à point et point à multipoint, half-duplex et full-duplex. Il suffit de connecter un microphone externe, un amplificateur vocal, un haut-parleur, une antenne et une alimentation pour créer un interphone full-duplex.
| Pin number | Pin Name | Pin direction | Pin Purpose |
| 1 | GND | GND | Module ground wire |
| 2 | GND | GND | Module ground wire |
| 3 | GND | GND | Module ground wire |
| 4 | TXEN | Output | Send indication signal, high effective |
| 5 | RXEN | Output | Receive indication signal, high effective |
| 6 | NC | - | Empty foot ( not open for use, users do not need to care ) |
| 7 | NC | - | Empty foot ( not open for use, users do not need to care ) |
| 8 | NC | - | Empty foot ( not open for use, users do not need to care ) |
| 9 | In - | input | Volume - button (low level trigger) |
| 10 | In + | input | Volume + button (low level trigger) |
| 11 | PTT | input | PTT voice intercom button (low level trigger) |
| 12 | VCC | 3V3 | power supply |
| 13 | PG | GND | Module ground wire |
| 14 | NC | - | Empty foot ( not open for use, users do not need to care ) |
| 15 | PG | GND | Module ground wire |
| 16 | PG | GND | Module ground wire |
| 17 | RST | input | Reset signal interface |
| 18 | VDDAC | Output | MIC power pin , dedicated power output |
| 19 | MSG | input | Microphone input interface |
| 20 | AT | AGND | Analog signal ground , external MIC input is connected here |
| 21 | SKP_P | Output | Speaker differential signal P terminal |
| 22 | SKP_N | Output | Speaker differential signal N terminal |
| 23 | AT | AGND | Analog signal ground |
| 24 | RXD | RXD | Configure serial port RXD |
| 25 | TXD | TXD | Configure serial port TXD |
| 26 | MUTE | input | Mute button (low level trigger) |
| 27 | UPDATE | input | Firmware Download Pin |
| 28 | GND | GND | Module ground wire |
| 29 | ON | RFIO | RF antenna interface |
| 30 | GND | GND | Module ground wire |