KSP-N51U Overview
Introduction
KSP-N51U is an internal LTE-M and NB-IoT module in the KORLINX industrial LTE-M product series. It is designed for embedded IoT devices that require cellular connectivity, compact PCB-level integration, and AT command-based control through UART.
The module supports LTE-M / NB-IoT communication, GNSS positioning, cloud-oriented IoT protocols, and low-power operation. With a U.FL antenna connector and 2.54 mm header pin connection, KSP-N51U can be integrated into host boards and development platforms that require a compact internal cellular module.
KSP-N51U is suitable for embedded systems, industrial gateways, smart meters, monitoring devices, and development platforms that need reliable cellular communication in a small PCB form factor.
Key Features
KSP-N51U provides a compact internal LTE-M / NB-IoT solution for embedded IoT development and integration.
Low-power Operation
Under 5 µA in PSM / DRX power-saving mode.
UART Interface
UART interface for host communication and AT command control.
Protocols Supported
MQTT, CoAP, HTTP, and LwM2M.
GNSS Supported
GNSS support for location-enabled IoT applications.
Security
Arm TrustZone and Arm CryptoCell 310 support.
Embedded Integration
2.54 mm header pin type connection for internal module integration.
Why Choose KSP-N51U?
KSP-N51U is designed for embedded IoT products that need LTE-M / NB-IoT connectivity without using an external modem enclosure.
Compared with plug-and-play external modem products, KSP-N51U provides:
- Smaller PCB-level integration
- UART-based host communication
- U.FL antenna connection
- Low-power LTE-M / NB-IoT operation
- AT command-based modem control
- SDK support for common MCU platforms
This makes KSP-N51U suitable for projects that require internal cellular integration while keeping the host hardware compact.
Typical Applications
KSP-N51U can be used in embedded and industrial IoT applications that require compact LTE-M / NB-IoT connectivity.
Typical use cases include:
- Smart meter systems — cellular connectivity for AMI and metering devices
- Industrial gateways — embedded cellular communication for gateway products
- Remote monitoring devices — network connection for distributed field equipment
- Development platforms — LTE-M / NB-IoT testing with MCU-based systems
- Asset and equipment monitoring — location-aware or network-connected IoT devices
Technical Highlights
| Item | Specification |
|---|---|
| Cellular Network | LTE-M / NB-IoT |
| MCU | 64 MHz Arm Cortex-M33 |
| Memory | 1 MB Flash + 256 KB RAM |
| External Flash | 4 MB |
| GNSS | Supported |
| Protocols | MQTT, CoAP, HTTP, LwM2M |
| Control | AT-COMMAND (UART) |
| SDK | ESP32, STM32 Series, nRF52 Series |
| Security | Arm TrustZone + Arm CryptoCell 310 |