The N511CS-B is a high-performance, compact narrowband RF module built around Texas Instruments' CC1200 transceiver. Engineered for reliability and ease of integration, it features a high-stability 40 MHz TCXO (Temperature Compensated Crystal Oscillator) and comprehensive ESD protection on every pin, including the RF interface. This module delivers +15 dBm output power and excellent -121 dBm receiver sensitivity at 1.2 kbps, enabling robust communication over distances up to 1500 meters. Its fully integrated design eliminates the need for external SAW or IF filters, while the 4-layer PCB ensures optimal RF performance. With support for major Sub-1GHz ISM bands and direct compatibility with Sigfox networks and Arduino platforms, the N511CS-B is an ideal solution for demanding IoT, industrial monitoring, and wireless meter reading applications.

[📊 Download Full Datasheet Now] | [🔧 View Hardware Design Guide]

2. Key Features & Benefits

Feature	Benefit
Reliable RF Performance	+15 dBm TX power and -121 dBm RX sensitivity, combined with a 40 MHz TCXO, ensure stable, long-range communication for narrowband applications.
Robust ESD Protection	Every I/O pin and the RF interface feature enhanced ESD protection, significantly improving durability and reliability in real-world deployments.
Global Multi-Band Support	Operates on key narrowband frequencies: 169 MHz, 433 MHz, 868 MHz, and 915 MHz (including regional variants), facilitating worldwide product development.
Ultra-Low Power Operation	Consumes only 23 mA in RX mode and a remarkable 0.1 µA in sleep mode, making it exceptionally suitable for battery-powered, long-life devices.
Compact & Easy Integration	Extremely small 19.0 × 16.0 × 3.0 mm SMD package simplifies PCB design. The simple SPI interface and integrated filters allow for rapid development without deep RF expertise.
Ecosystem Compatibility	Fully compatible with Arduino development platforms and ready for integration into Sigfox LPWAN networks.

3. Detailed Technical Specifications

Get All Technical Documentation: [📘 Full Technical Specs] | [📐 3D Model Files] | [📋 Certification List]

Category	Parameter	Specification	Notes / Conditions
RF & Performance	Frequency Bands	169 MHz, 433 MHz, 868 MHz, 915 MHz	Covers 164-192, 410-480, 820-960 MHz ranges.
	Max. Output Power	+15 dBm (~32 mW)
	Receiver Sensitivity	-121 dBm	@ 1.2 kbps data rate (2-FSK).
	Modulation	2-FSK, 4-FSK, MSK, OOK
	Programmable Data Rate	0.3 – 600 kbps	Narrowband optimized. CC1200 enables higher bandwidth options.
	Typical Range	Up to 1500 m	Line-of-sight, ideal conditions.
Hardware	Module Dimensions	19.0 × 16.0 × 3.0 mm
	Antenna Interface	RF Pad (50Ω)	Requires external matching network/antenna. [🔗 Recommended Antenna List]
	Host Interface	SPI (MOSI, MISO, SCK, NSS) + GPIOs	[💻 SPI Interface Protocol]
	Oscillator	Integrated 40 MHz TCXO	Pin 6 (VTC) for power control.
	Protection	ESD Protection on All Pins
	Package	Surface Mount Device (SMD)	4-layer PCB.
Electrical	Supply Voltage (VCC)	1.8V – 3.6V (3.3V Typical)
	Tx Current (Peak)	53 mA (Typical @ +15 dBm)
	Rx Current	23 mA (Typical)
	Sleep Current	0.1 µA (Typical)
	Operating Temperature	-40°C to +80°C	Industrial grade.

4. Target Applications

Sigfox Network End Devices: Certified for use in global Sigfox low-power wide-area networks. [📡 View Sigfox Certification Details]
Industrial Monitoring & Control (IIoT): Wireless sensor networks for equipment monitoring, environmental sensing.
Wireless Metering (AMR/AMI): Smart water, gas, and electricity meters. [🛢️ Smart Metering Solutions]
Home & Building Automation: Security systems, HVAC control, smart lighting.
Arduino & Maker Projects: Easy-to-integrate wireless connectivity for educational kits and rapid prototyping. [🤖 Get Arduino Development Library]
Asset Tracking & Logistics: Low-power tracking of vehicles, containers, or high-value assets.

5. Pin Configuration & Critical Functions

Design Note: For proper operation, especially when using TCXO sleep control, follow this power sequence: 1) Power TCXO (VTC), 2) Wait >2ms, 3) Assert Reset (RST), 4) Configure via SPI.

Pin	Name	Type	Description
1	RF	I/O	RF Input/Output. Connect to antenna matching network. [📡 Antenna Design Guide]
6	VTC	Power	TCXO Power Control. Connect to VCC (always on) or a GPIO for sleep control.
8-10, 12	MOSI, MISO, SCK, NSS	I/O	SPI Interface for chip configuration and data exchange.
5	RST	I	Active-low Reset input.
4, 7, 11	GPIO3, GPIO2, GPIO0	I/O	General-purpose I/O pins from CC1200.
13	VCC	P	Power Supply (1.8V - 3.6V).
2, 3, 14	GND	P	Ground.

6. Why Choose the N511CS-B?

Engineered for Reliability and Efficiency

Exceptional Reliability: The combination of a TCXO for frequency stability and full-pin ESD protection makes it one of the most robust narrowband modules available.
CC1200 Platform Advantage: CC1200 Platform Advantage: Compared to the previous-generation CC1120/CC1125, the CC1200 offers higher maximum data rates, improved range, and superior blocking performance, future-proofing your design.
Power Efficiency Leader: An ultra-low 0.1 µA sleep current sets a high standard for battery-operated applications.
Developer-Friendly: The standard SPI interface and available code examples lower the barrier to entry for wireless development. [💾 GitHub Code Repository]
Market-Ready Compatibility: Direct compatibility with the Sigfox and Arduino ecosystems accelerates product development and certification.

Still Evaluating? [🔄 Compare N511CS-B with Other Narrowband Modules]

7. Ordering Information

Order Code	Core IC	Target Frequency Range	Output Power	Key Application
N511CS-B-169M	CC1200	160 – 175 MHz	+15 dBm	EU Utility Metering & Sigfox
N511CS-B-433M	CC1200	410 – 480 MHz	+15 dBm	Global ISM & Consumer IoT
N511CS-B-868M	CC1200	860 – 960 MHz	+15 dBm	European Sigfox & LPWAN

Unsure which frequency to choose? [🛠️ Consult an Engineer for Selection Advice]

Need Higher Power? Explore Our CC1200 High-Performance Series

The N511CS-B provides a balanced, cost-effective foundation for most narrowband applications. If your project requires extended transmission range or higher output power for challenging environments, explore our enhanced, high-power (G)FSK modules built on the same reliable CC1200 platform.

Dimension	High-Performance Module (+25 dBm)	Extended Range Module (+27 dBm)	Maximum Power Module (+33 dBm)
Product Model	N515CS Module	N516CS Module	N518CS Module
Core IC(s)	CC1200 + High-Efficiency PA	CC1200 + CC1190 Front-End	CC1200 + Industrial-Grade PA
Protocol Support	(G)FSK, MSK, OOK	(G)FSK, MSK, OOK	(G)FSK, MSK, OOK
Key Upgrade Highlights	+25 dBm (~0.3W) • Ideal for urban/suburban networks • ~60% range improvement over +15dBm • Balanced power consumption	+27 dBm (~0.5W) • Designed for rural/rugged deployments • Excellent penetration through dense vegetation & structures	+33 dBm (~2W) • Maximum legal power for industrial use • Ultra-long-haul backbone links (>15km)
Learn More	[View N515CS Details]	[View N516CS Details]	[View N518CS Details]

How to Choose Within the CC1200 Series?

Choose the N511CS-B if you are developing typical narrowband applications that require +15dBm output, ultra-low power consumption, and optimal cost. It's perfect for smart meters, environmental sensors, and most battery-operated IoT devices.
Upgrade to the N515CS if your application operates in urban environments with obstructions or needs approximately 60% more range than the standard module. This is ideal for smart city infrastructure and building management systems that require a higher link budget.
Choose the N516CS for rural, agricultural, or geographically challenging deployments where distance is critical. With +27dBm output, it can cover large farms, forests, or uneven terrain where standard modules may struggle.
Select the N518CS only for mission-critical industrial applications that require the maximum possible communication range and can accommodate higher power consumption. This includes remote telemetry, critical infrastructure monitoring, and applications where communication reliability cannot be compromised.

Next Steps: Start Your Design

[🛒 Request a Sample or Evaluation Kit]
[💬 Contact Technical Support]
[📞 Schedule a 1-on-1 Technical Consultation]

Explore Our Complete CC1200-Based Narrowband Family:
[📻 N511CS-B Foundation - +15dBm, Ultra-Low Power, Cost-Optimized]
[⚡ N515CS-B High-Performance - +25dBm, The Balanced Choice]
[🚀 N516CS-B Extended Range - +27dBm, Complex Terrain]
[💎 N518CS Maximum Power - +33dBm, Backbone Links]
[🔗 View CC1200 Full Series Comparison]