[IC]：-
[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.
| Main parameter | Description | Remark |
| Distance for reference | 2500m | Test condition：clear and open area, antenna gain:5dBi,antenna height:2.5m，air data rate:1.2kbps |
| FIFO | 54 Btye | Maximum capacity of single transmission, auto-sub-packing when exceeding |
| Cache capacity | 500 Btye | - |
| Modulation | GFSK | - |
| Communication interface | UART serial port | - |
| Package | SMD | - |
| Connector | 1.27mm | - |
| Size | 26*16mm | - |
| Antenna | IPEX/Stamp hole | 50 ohm impedance |
| Main parameter | Min. | Typ. | Max. | Unit | Remark |
| Operating voltage | 2.3 | 5 | 5.5 | V | Over 5.5V will permanently damage module |
| Operating frequency | 850 | 868 | 930 | MHz | Support ISM band |
| Communication level | - | 3.3 | - | V | For 5V TTL, it may be at risk of burning down |
| TX current | - | 97.9 | - | mA | Instant power consumption |
| RX current | - | 12.04 | - | mA | - |
| Sleep current | - | 1.3 | - | μA | Software is shut down |
| Operating temperature | -40 | - | +85 | ℃ | Industrial design |
| Max Tx power | - | - | 20 | dBm | - |
| Receiving sensitivity | -114 | -115 | -116 | dBm | Air data rate is1.2kbps |
| Air data rate | 1.2k | 2.4k | 200k | bps | Controlled via user’s programming |
| 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: 2.6V ~ 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 |
| Order online |
| 【eBay】：https://www.ebay.com |
| 【Amazon】：https://www.amazon.co.uk |
| 【Aliexpress】：https://www.aliexpress.com |
| 【Aliexpress】：https://www.aliexpress.com |
| For batch order/customized product |
| 【Sales hotline】：+86-28-61399028 Ext.812 |
| 【E-mail】：service@cdebyte.com |
| Technical support |
| 【Submit online】：http://www.ebyte.com/en/apple-technology.aspx |
| 【E-mail】：support@cdebyte.com |
| 产品 型号 | Interface | IC | Frequency | Power | Distance | Air data rate | Package | Size | Feature | 技术 手册 | 样品 购买 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E49-900T20S | UART | - | 868M 915M | 20 | 2.5 | 1.2k~200k | SMD | 26 * 16 | Low power consumption | ||
| E49-900M20S | SPI | CMT2300A | 868M 915M | 20 | 3 | - | SMD | 20*14 | Low power consumption | ||
| E49-400M20S | SPI | - | 433M 470M | 20 | 2.5 | 0.5Kbps～300Kbps | SMD | 26 * 16 | Low power consumption, high cost performance | ||
| E49-400T20S | UART | - | 433M 470M | 20 | 2.5 | 1.2k~200k | SMD | 26 * 16 | Low power consumption, low cost solution | ||
| E49-400T20D | UART | - | 433M 470M | 20 | 2.5 | 1.2k~200k | DIP | 36*21 | Low power consumption, low cost solution |
