Ebyte OEM/ODM New best quality 20DBM transmit power ISM 915MHZ Wireless data transmission module
[Frequency]：850~930MHz
[Power]：20dBm
[Distance]：2.5km
[Size]：26*16mm
[Introduction]：E49-900T20S is an ultra-high cost-effective wireless module launched by Chengdu Ebyte. It has 4 operating modes. Each transmission mode has its own characteristics and can be applied to various application scenarios.
| No. | Name | Direction | Function |
|---|---|---|---|
| 1 | GND | - | Module ground wire |
| 2 | GND | - | Module ground wire |
| 3 | GND | - | Module ground wire |
| 4 | GND | - | Module ground wire |
| 5 | M0 | Input(pull up when it's weak) | Cooperate with M1 to determine 4 operating modes of the module(can be lifted floating, the module contains pull-up resistor） |
| 6 | M1 | Input(pull up when it's weak) | Cooperate with M0 to determine 4 operating modes of the module(can be lifted floating, the module contains pull-up resistor） |
| 7 | RXD | Input | TTL serial input, connect to external TXD output pin; |
| 8 | TXD | Output | TTLserial input, connect to external RXD output pin; |
| 9 | AUX | Output | Used to indicate the working status of the module; the user wakes up the external MCU and outputs a low level during the power-on self-test initialization |
| 10 | VCC | - | Module power supply positive reference, voltage range: 3.3V ~ 5.5V DC |
| 11 | GND | - | Module ground wire |
| 12 | NC | - | - |
| 13 | GND | - | Module ground wire |
| 14 | NC | - | - |
| 15 | NC | - | - |
| 16 | NC | - | - |
| 17 | NC | - | - |
| 18 | NC | - | - |
| 19 | GND | - | Module ground wire |
| 20 | GND | - | Module ground wire |
| 21 | ANT | - | antenna |
| 22 | GND | - | Module ground wire |