Wireless RF Modules and dongles for IoT | Coral RF

Complex matching networks. Painful FCC/CE testing. Endless firmware debugging. And your battery-powered device needs to talk kilometers away – not just across a room.

Meet the N532BS-B. The first low-cost, 31dBm, AT-command controlled module that turns RF complexity into a solved problem.

Based on the powerful Texas Instruments CC1312R wireless MCU (ARM Cortex‑M4, 352KB Flash, 80KB RAM), the N532BS-B is part of Coral RF's extensive family of CC1312 modules – engineered for long-range reliability in industrial IoT, smart metering, and remote sensing applications. This module integrates a Skyworks front-end module (FEM) that has already been matched and tuned for optimal 868/915 MHz performance, so you don‘t need an RF engineer just to blink an LED.

💥 Why +31dBm Matters (And Why You’ve Been Settling for Less)

Most “long-range” modules top out at +20dBm or +22dBm. That's fine for line-of-sight in a park. But in real-world conditions – walls, trees, interference – those modules fall silent after a few hundred meters.

The N532BS-B delivers +27dBm at 3V, +30dBm at 4.2V, and a staggering +31dBm at 4.8V – with a Skyworks FEM that achieves >52% PA efficiency. That’s not just a spec sheet number. That's the difference between a sensor that drops out in a warehouse and one that keeps reporting from the far corner of a farm.

By comparison, Coral RF's N620PA module delivers +27dBm at a lower price point, while the N533AS offers +30dBm for extreme-range gateway applications. The N532BS-B sits at a unique sweet spot: 31dBm with full AT command support.

8 km line-of-sight range at 50 kbps (tested with 3dBi antenna)
-124dBm sensitivity – hear whispers others miss
155dB link budget – punch through concrete and foliage

No more “almost there” range anxiety.

⚡ AT Commands: Your Shortcut to Market

You shouldn‘t need an RF engineer on staff just to blink an LED over the air. The N532BS-B speaks plain UART AT commands out of the box. The CC1312R’s flexible, ultra-low-power RF transceiver combined with an ARM Cortex-M4 core makes it a perfect platform for AT-command-based rapid development.

AT+SCAN=868000000   → sets frequency
AT+SEND=Hello       → transmits data
AT+RSSI?            → reads signal strength

That's it. No embedded coding. No stack integration. No weeks of debugging. Just plug in your MCU’s UART, send text commands, and you're transmitting.

Learn more about Coral RF's AT Command modules →

Time from concept to prototype: hours, not months.

🔋 Low Power? Yes. Ultra-Low Power.

High output power usually means “needs a truck battery”. But the N532BS-B is built for battery-powered sensors that must last years.

RX: 12mA – listen all day without draining
Sleep: <1µA – forget about it for months
TX @ 27dBm: 370mA – burst high power, then sleep

The CC1312R architecture includes a dedicated Radio Controller (Cortex-M0) that handles low-level RF protocol commands stored in ROM or RAM, ensuring ultra‑low power operation even while maintaining a constant RF link. Combine this with CC1312R’s flexible wake-up timers, and you get a module that screams far but sips power.

For extremely low-power applications, Coral RF offers the N530AS module with +14dBm output and UART AT command support – perfect for battery-powered sensors where moderate range is sufficient.

📦 The Envelope: 30×21×3mm SMD – Fits Anywhere

No clumsy daughterboards. No through-hole relics. The N532BS-B is a pick-and-place ready SMD module with:

IPEX connector + stamp hole – use external or PCB antenna
29 DIO pins, JTAG, reset – full MCU access if you want custom firmware
Industrial temp range – -30°C to +75°C
Separate PA supply (2.3-5.5V) – optimize power for your battery chemistry

It’s so small you'll almost forget it’s there. Almost – until you see the range.

The module is built on a professional 4-layer PCB with 50Ω impedance matching and industrial-grade anti-interference design, ensuring consistent RF performance even in electromagnetically noisy environments. This is the same rigorous design approach used across Coral RF's entire CC1312 product family, which also includes the N620PA (+27dBm with CC1190) and higher-power N533AS series.

🧠 Two Ways to Use It: Your Choice

Option 1 – AT Command Mode (Zero Programming)

Perfect for existing MCU platforms (Arduino, ESP32, STM32). Send AT commands over UART. We handle the RF stack. You focus on your application. The module comes pre-flashed with AT command firmware that supports Wireless M-Bus, 6LoWPAN, and proprietary protocols out of the box.

Option 2 – Custom Firmware (Full Control)

All pins broken out. JTAG accessible. Use TI Code Composer Studio or IAR. Load your own protocol – TI 15.4-stack, Wireless M-Bus, 6LoWPAN, or raw FSK. The CC1312R is a powerful ARM Cortex-M4 with 352KB Flash and 80KB RAM – double the memory of older CC1310 designs.

Explore the full CC1312 development ecosystem →

You get the hardware flexibility of a bare chip – with the RF front-end already optimized and certified.

🌍 Applications That Demand the Best

Industry	Why N532BS‑B
Smart Agriculture	8km range covers vast fields. Solar-powered nodes? 12mA RX keeps them alive.
Utility Metering	Punch into basements and through brick walls. +31dBm reaches meters others miss.
Industrial Control	Reliable SCADA links over noisy factory floors. No dropouts. No excuses.
Smart City	Streetlights, parking sensors, waste bins – one gateway covers a district.
Medical Telemetry	Patient monitoring without WiFi-reliance. Secure, long-range, low-power.

For gateway applications, pair the N532BS-B with Coral RF's N537BP USB Dongle – a plug-and-play Sub-1GHz USB adapter based on the CC1312R+CC1190 platform. The N537BP delivers +27dBm output, a 5km range, and supports 868/915MHz bands, making it the perfect companion for gateway prototyping and packet sniffing during development.

📋 Technical Snapshot (For the Engineers)

Parameter	Value
RF Chipset	CC1312R + Skyworks SKY66423 FEM
Frequency	868 MHz / 915 MHz (software selectable)
Output Power	+27dBm @ 3V, +30dBm @ 4.2V, +31dBm @ 4.8V
RX Sensitivity	-124dBm @ 0.3kbps / -112dBm @ 50kbps
Max Range	8 km LOS (50kbps, 3dBi antenna)
TX Current	370mA @ 27dBm, 480mA @ 30dBm, 530mA @ 31dBm
RX Current	12mA
Sleep Current	<1µA
Interface	UART (AT commands) + SPI
I/O	29 DIO, JTAG, RESET
Size	30 × 21 × 3 mm
Compliance	Pre-scanned for FCC/CE (modular in progress)

For a full list of specifications, including FCC/CE certification status and detailed pinout descriptions, refer to the official N532BS-B product page.

✅ Why Engineers Choose N532BS‑B Over Alternatives

#	Advantage
✔	No RF black magic – the Skyworks FEM is already matched and tuned
✔	AT commands eliminate months of firmware development – seriously, it’s that easy
✔	8km range gives you margin, not miracles – you’ll actually hit your coverage targets
✔	Low power meets high power – +31dBm and 1µA sleep? Yes
✔	You own the firmware – go AT for speed, or full SDK for flexibility
✔	Plug-and-play CC1312 development board – For faster prototyping, Coral RF also offers a dedicated CC1312 development board with USB interface, built-in FTDI for UART over USB, and JTAG/SWD debugging support

If you need even more power, consider the N533AS which delivers +30dBm (1W) for gateway applications, or the N620PA for a +27dBm option with CC1190 front-end. For multi-band flexibility across 169/433/868/915MHz, the CC1125-based N517BS offers +30dBm in a compact SMD package.