E32-170T30D is a 1W wireless transceiver module based on SEMTECH's LoRa solution. It has an operating frequency of 160 ~ 173.5MHz, transparent transmission, TTL level, and is compatible with 3.3V. E32-170T30D is a 1W wireless transceiver module using LoRa spread spectrum technology, with an operating frequency of 160 ~ 173.5MHz.
[Frequency]：160~173MHz
[Power]：21~30dBm
[Distance]：8.0km
[Interface]：UART
[Weight]：8.2±0.1g
| RF Parameter | Value | Remark |
|---|---|---|
| Working frequency | 160~173 MHz | Default: 170MHz |
| Transmitting power | 21~30 dBm | Default: 30dBm（About 1W） |
| Receiving sensitivity | -147 dBm | - |
| Air data rate | - | - |
| Test distance | 8000 meter | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m |
| Hardware Parameter | Value | Remark |
|---|---|---|
| Size | 24 * 43 mm | Without SMA |
| Antenna type | SMA-K | |
| Communication interface | UART | Baud rate: 1200~115200, default: 9600 |
| Package | DIP | |
| Buffer | 512 bytes buffer | Automatically sub-packaging with 58 bytes per package |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
|---|---|---|---|---|---|
| Power supply | 3.3 | 5.0 | 5.2 | V | |
| Communication level | 2.5 | 3.3 | 3.6 | V | |
| Transmitting current | 630 | 680 | 750 | mA | 30dBm（1W） |
| Receiving current | 21 | 22 | 23 | mA | |
| Sleep current | 4 | 5 | 6 | μA | |
| Operating temperature | -40 | 20 | +85 | ℃ | |
| Operating humidity | 10 | 60 | 90 | % | |
| Storage temperature | -40 | 20 | +125 | ℃ |
Practical Application Scenarios
1. Underground Mining and Tunnel Communications
In deep-underground mining, high-frequency signals often suffer from extreme attenuation. The E32-170T30D’s low-frequency band (160-173MHz) provides superior diffraction and penetration capabilities compared to standard 433MHz or 2.4GHz modules, allowing for stable transmission of critical safety and operational telemetry through thick rock walls and winding tunnel structures.
2. Large-Scale Rural Irrigation and Water Management
For expansive agricultural districts where cellular coverage is unavailable, this module is used to connect remote pump stations and flow sensors to a central PLC hub. Its long-range capability significantly reduces infrastructure costs, as fewer relay nodes are required to cover vast rural terrain, ensuring consistent irrigation schedule execution.
3. Railway and Pipeline Integrity Monitoring
This module is frequently deployed along long-distance pipeline routes and railway tracks to transmit sensor data regarding vibration, pressure, or unauthorized access. The robust LoRa spread spectrum modulation ensures that even with the constant industrial electromagnetic interference from electrified railway lines or heavy pipeline machinery, the sensor data remains intact and secure.
FAQ Section
1. Why is the 160-173MHz band particularly effective for industrial use?
The lower frequency range offers a much larger wavelength, which allows the signal to wrap around obstacles more efficiently and suffer less path loss over long distances. This is technically superior for non-line-of-sight (NLOS) applications where signal propagation must overcome heavy physical obstructions.
2. Is this module compatible with existing 3.3V microcontrollers?
Yes, the E32-170T30D is natively compatible with 3.3V logic level systems. This allows for direct integration with most modern ARM Cortex or ESP32-based embedded platforms without the need for additional complex voltage level shifters, simplifying the hardware design process.
3. What steps are required to maximize the 8km range?
Achieving the maximum range depends heavily on the antenna quality and the height of the installation. We recommend using a high-gain, resonant antenna specifically tuned for the 160-173MHz band, mounted at a clear elevation to maximize the Fresnel zone and minimize ground-reflection interference.
