E43-433T13S3 cost-effective wireless data transmission module applied to various application
[Frequency]：425~440.75MHz
[Power]：12.5dBm
[Distance]：1.0km
[Interface]：UART
[Size]：16*26mm
[Weight]：2.0±0.1g
[Feature]：Small size, cost effective
[Introduction]：The E43-433T13S3 is a super cost-effective wireless data transmission module manufactured by Chengdu Ebyte. It has four working modes and two transmission modes. Each transmission modes have their own characteristics, which can be applied to various application scenarios.
| Pin No. | Pin Item | Pin Direction | Pin Application |
|---|---|---|---|
| 1 | GND | - | Ground |
| 2 | GND | - | Ground |
| 3 | GND | - | Ground |
| 4 | GND | - | Ground |
| 5 | M0 | Input(weak pull-up) | Work with M1 & decide the four operating modes;Floating is not allowed, can be ground. |
| 6 | M1 | Input(weak pull-up) | Work with M0 & decide the four operating modes;Floating is not allowed, can be ground. |
| 7 | RXD | Input | TTL UART inputs, connects to external TXD output pin;Can be configured as open-drain or pull-up input. |
| 8 | TXD | Output | TTL UART outputs, connects to external RXD input pinCan be configured as open-drain or push-pull output. |
| 9 | AUX | Output | To wake up the external MCU, during the procedure of self-check initialization, the pinoutputs low level; Can be configured as open-drain output or push-pull output; Floating is allowed. |
| 10 | VCC | - | Voltage positive reference of module; Power supply 2.3V ~ 5.2V DC |
| 11 | GND | - | Ground |
| 12 | NC | - | - |
| 13 | GND | - | Ground |
| 14 | NC | - | - |
| 15 | NC | - | - |
| 16 | NC | - | - |
| 17 | NC | - | - |
| 18 | NC | - | - |
| 19 | GND | - | Ground |
| 20 | GND | - | Ground |
| 21 | ANT | - | Antenna |
| 22 | GND | - | Ground |