Wireless RF Modules and dongles for IoT | Coral RF

You're designing a network of sensors that spans a port, a mine, or a 10 km stretch of pipeline. The CC1312R1 is a solid Sub‑1GHz wireless MCU—reliable, low‑power, and packed with features—but at +14 dBm, it won't cover that kind of ground alone.

The N539BS adds the missing piece: a serious power amplifier.

We took Texas Instruments' CC1312R1 —a proven wireless MCU with an Arm Cortex‑M4 core, 352 kB flash, and an integrated sensor controller—and paired it with a high‑performance front‑end. The result is +37 dBm (5 watts) of transmit power, with sensitivity down to -112 dBm at 50 kbps. That's enough for reliable links beyond 10 km in open terrain.

The module covers 433 MHz, 868 MHz, and 915 MHz bands, so you can design once and deploy globally. All the RF matching, the TCXO, and the PA are done. You focus on your application code.

What You're Working With

Parameter	Value
Wireless MCU	TI CC1312R1 (48 MHz Cortex‑M4, 352 kB flash, 80 kB SRAM)
RF Front‑End	Integrated PA + LNA
Frequency Options	433 MHz (410–480), 868 MHz (860–880), 915 MHz (910–930)
Max Output Power	+37 dBm (5 W) typical
RX Sensitivity	-112 dBm @ 50 kbps
Max Data Rate	4 Mbps
Typical Range	Up to 10 km (line‑of‑sight, ideal)
Core Supply (VCC)	2.0–3.6 V
PA Supply (VCCPA)	4.5–5.5 V (needs 2 A peak capability)
TX Current (peak)	~2000 mA @ +37 dBm
RX Current	~12 mA typical
Antenna Interface	50Ω RF pad or IPEX connector
Dimensions	43.0 × 29.0 × 3.0 mm
Operating Temp	-30°C to +70°C

Why Engineers Choose the N539BS

The 5‑Watt Advantage
+37 dBm is a lot of RF energy. It punches through concrete walls, dense foliage, and kilometers of open air. If you need to cover a large farm, an industrial site, or a rural valley, this module will do it.

CC1312R1 – Proven and Capable
The CC1312R1 is one of TI's most popular Sub‑1GHz MCUs. It gives you:

352 kB flash and 80 kB SRAM – enough for complex stacks like Wi‑SUN or Wireless M‑Bus
An ultra‑low‑power sensor controller that runs at 32 µA while handling external sensors
Advanced security features including AES‑256 and ECC
Full support in TI's SimpleLink SDK

Global Bands, One Design
Choose 433, 868, or 915 MHz. The module stays the same—you just pick the variant that matches your region.

Thermal and Power Are Managed
5 W generates heat, but the module is designed for pulsed operation (typical for Sub‑1GHz networks). The pad layout helps get heat out, but you still need to design your supply to deliver 2 A cleanly. See our power supply design notes.

Development Flow
All CC1312R1 pins are broken out. Flash and debug via JTAG, use the SimpleLink SDK, and treat it like any other Cortex‑M4 project.

Where It Goes

Industrial IoT gateways – Collecting data from sensors spread across large facilities
Smart metering concentrators – Wireless M‑Bus or proprietary AMR networks
Long‑range sensor networks – Agricultural monitoring, pipeline pressure, environmental logging
Asset tracking – Containers, rail cars, heavy equipment that move across regions
Backup communications – When cellular isn't available or costs too much

Pin Layout (26‑Pin)

Pin(s)	Name	Description
1, 2, 5, 13, 26	GND	Ground
3, 4	VCCPA	PA supply (4.5–5.5 V, must handle 2 A peaks)
12	VCC	Core supply (3.0–3.6 V)
14	RESET	Module reset (active low)
6–11, 17–24	DIOx	Programmable GPIOs of CC1312R1
15, 16	TMS, TCK	JTAG debug interface
25	RF	50Ω RF I/O

Compare the Family

Model	Core	PA	Output Power	Form Factor	Best For
N534BP	CC1312R1	None	+14 dBm	SMD	Low‑power sensors, short range
N537BP	CC1312R1	CC1190	+27 dBm	USB stick	Gateways, handheld readers, development
N539BS	CC1312R1	Integrated PA	+37 dBm	SMD	Extreme range, industrial gateways, rural deployments
N539ES	CC1314R10	Integrated PA	+37 dBm	SMD	Same power, newer MCU with TrustZone

📘 Learn more about Sub‑1GHz IoT gateway solutions‍

All modules supported by TI SimpleLink SDK .

Ordering Information

Order Code	Frequency	Output Power
N539BS-CC1312R1-433M	410–480 MHz	+37 dBm
N539BS-CC1312R1-868M	860–880 MHz	+37 dBm
N539BS-CC1312R1-915M	910–930 MHz	+37 dBm

Design Notes

Power Supply
At +37 dBm, the module draws up to 2 A peaks. Your 5 V supply needs low noise and enough bulk capacitance to handle those transients. Read our guide on power supply design for high‑power RF modules.

Antenna
Range is only as good as the antenna. Use a well‑matched antenna tuned to your frequency, and keep the RF trace short.

Thermal Management
Pulsed operation keeps heating manageable. But if you're transmitting long packets at high duty cycles, consider a small heatsink or airflow.

Regulatory
This much power needs care with local rules. We've designed the module to help with compliance, but final certification is your responsibility.

Get Started

📄 Download N539BS datasheet (PDF)
📘 CC1312R1 technical reference manual
🧪 Request samples or evaluation boards
📞 Talk to an applications engineer

Specifications subject to change. Actual range depends on antenna, environment, and local regulations. Ensure compliance with regional radio laws before deployment.