Wireless RF Modules and dongles for IoT | Coral RF

You have a brilliant IoT product idea. But the wireless part? It’s a nightmare.
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 N532AS-B. The first low‑cost, 31dBm, AT‑command controlled module that turns RF complexity into a solved problem.

💥 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 N532AS-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.

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 N532AS-B speaks plain UART AT commands out of the box.

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.

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 N532AS-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

Combine this with CC1310’s flexible wake‑up timers, and you get a module that screams far but sips power.

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

No clumsy daughterboards. No through‑hole relics. The N532AS-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.

🧠 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.

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 LoRa. The CC1310 is a proven 128KB Flash/16KB RAM Cortex‑M3 powerhouse.

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 N532AS‑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.

📋 Technical Snapshot (For the Engineers)

Parameter	Value
RF Chipset	CC1310F128 + 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)

✅ Why Engineers Choose N532AS‑B Over Alternatives

✔ 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. Your call.