1. పరిచయం
The EBYTE E49-400T20D is an ultra-high cost-effective wireless module designed for reliable and long-range data transmission. It operates in the 410-510MHz frequency band, offering a maximum transmit power of 20dBm (100mW) and a communication distance of up to 2.5km. This module is suitable for a wide range of industrial-grade applications, ensuring robust performance and consistency.

Figure 1: EBYTE E49-400T20D Wireless Module with SMA antenna interface.
2 ఫీచర్లు
- 2.5 కి.మీ వరకు కమ్యూనికేషన్ దూరం కొలుస్తారు.
- Maximum transmit power of 100mW (20dBm), software adjustable at multiple levels.
- Utilizes the global license-free ISM 433MHz frequency band.
- Data transmission rate: 1.2Kbps to 200Kbps.
- Low power consumption mode, ideal for battery-powered applications.
- GFSK modulation for reliable data transfer.
- ఆపరేటింగ్ వాల్యూమ్tage పరిధి: 2.6V నుండి 3.3V.
- Industrial-grade standard design for long-term use in temperatures from -40°C to 85°C.
- SMA antenna interface for easy connection.
- Data encryption function for enhanced security and reduced interference.
3. స్పెసిఫికేషన్లు

Figure 2: Main technical parameters of the E49-400T20D module.
| పరామితి | వివరణ |
|---|---|
| ఉత్పత్తి పరిమాణం | 36mm * 21mm |
| యాంటెన్నా | SMA |
| పని ఫ్రీక్వెన్సీ | 410~510MHz |
| గరిష్ట Tx పవర్ (dBm) | 20.0 డిబిఎం |
| సూచన దూరం | 2.5 కి.మీ |
| ఆపరేటింగ్ వాల్యూమ్tage | 2.6V~5.5V |
| కమ్యూనికేషన్ ఇంటర్ఫేస్ | UART |
| సున్నితత్వాన్ని స్వీకరించడం | -116~-117kbps |
| స్లీప్ కరెంట్ | 0.7µA |

Figure 3: Dimensions of the E49-400T20D module (36mm x 21mm).
4. సెటప్
To set up the E49-400T20D wireless module, follow these general guidelines:
- విద్యుత్ సరఫరా: Connect the module to a stable power supply within the 2.6V to 3.3V range. Ensure correct polarity to prevent damage.
- యాంటెన్నా కనెక్షన్: Attach a compatible 433MHz/470MHz SMA antenna to the module's SMA interface. A properly connected antenna is crucial for optimal performance.
- UART కనెక్షన్: Connect the module's UART pins (TX, RX, GND) to your microcontroller or host device. Ensure the baud rate and other serial communication parameters are correctly configured on both ends.
- కాన్ఫిగరేషన్: Refer to the module's detailed datasheet for specific register configurations, including setting the desired operating mode, transmission power, and data rate.
5. ఆపరేటింగ్ మోడ్లు
The E49-400T20D module features four distinct operating modes, each optimized for different application scenarios. These modes allow for flexibility in balancing power consumption, transmission speed, and range. Users can configure the module to select the most suitable mode for their specific needs.
The module supports configurable air data speeds, ranging from 1.2Kbps to 200Kbps. Higher air data speeds result in faster data transmission and shorter transmission delays, while lower speeds can achieve longer transmission distances.

Figure 4: Illustration of configurable air data speeds (1.2kbps, 2.4kbps, 200kbps).
6. నిర్వహణ
To ensure the longevity and optimal performance of your E49-400T20D module, adhere to the following maintenance guidelines:
- పర్యావరణ పరిస్థితులు: Operate the module within its specified industrial-grade temperature range of -40°C to 85°C. Avoid exposure to extreme temperatures, high humidity, or corrosive environments.
- నిర్వహణ: Handle the module with care to prevent physical damage. Avoid static discharge by using appropriate ESD precautions when handling.
- శుభ్రపరచడం: If necessary, gently clean the module's exterior with a dry, soft cloth. Do not use liquid cleaners or solvents.
- యాంటెన్నా సంరక్షణ: Ensure the antenna connection is secure and the antenna itself is not damaged. A damaged antenna can significantly reduce performance.

Figure 5: The module is designed for long-term use in temperatures from -40°C to 85°C.
7. ట్రబుల్షూటింగ్
If you encounter issues with your E49-400T20D module, consider the following troubleshooting steps:
- కమ్యూనికేషన్ లేదు:
- విద్యుత్ సరఫరా వాల్యూమ్ని ధృవీకరించండిtagఇ మరియు ధ్రువణత.
- Check UART connections (TX to RX, RX to TX) and ensure correct baud rate settings.
- Confirm that the module is in an active operating mode and not in a low-power sleep state.
- Poor Range or Signal Strength:
- Ensure the antenna is securely connected and undamaged.
- Check for obstructions between modules (e.g., walls, metal objects).
- Verify that the transmit power is set to the desired level (e.g., 20dBm for maximum range).
- Consider environmental interference from other RF devices.
- మాడ్యూల్ స్పందించడం లేదు:
- Perform a power cycle (turn off and on) to reset the module.
- Recheck all wiring connections.
8 అప్లికేషన్లు
The EBYTE E49-400T20D module is versatile and suitable for a wide array of IoT and industrial applications, including but not limited to:
- ధరించగలిగే పరికరాలు
- స్మార్ట్ హోమ్ మరియు పారిశ్రామిక సెన్సార్లు
- Security systems and positioning systems
- Wireless remote control and unmanned drones
- Wireless game remote controls
- ఆరోగ్య సంరక్షణ ఉత్పత్తులు
- Wireless voice communication and wireless headsets
- ఆటోమోటివ్ పరిశ్రమ అప్లికేషన్లు

Figure 6: Various IoT application scenarios for EBYTE products, including smart home, remote control, access control, and security systems.
9. వారంటీ మరియు మద్దతు
For warranty information, technical support, or further inquiries regarding the EBYTE E49-400T20D module, please contact the manufacturer directly. EBYTE products undergo rigorous testing to ensure industrial reliability and batch consistency.
తయారీదారు: Chengdu Ebyte Electronic Technology Co. Ltd.
Webసైట్: www.cdebyte.com
EU ప్రతినిధి: evalmaster Consulting GmbH

Figure 7: Product packaging displaying manufacturer and EU representative information.





