AnyPCBA PCB and PCBA case studies
Smart locks, smart meters, and smart city infrastructure require reliable, low-power wide-area connectivity with deep indoor penetration. This project required an NB-IoT control module that could provide long battery life, easy cloud integration, and industrial-grade reliability.
Key Hardware Requirements:
Ultra-Low Standby Current: 7µA for extended battery life
Wide Operating Temperature: -40°C to 85°C for outdoor and industrial applications
Wide Voltage Input: 4-8V for flexible power source compatibility
Integrated Solution: NB-IoT modem + MCU + power management on a single board
Compact Size: Small form factor for integration into space-constrained devices (63 × 37mm)
We designed a compact NB-IoT smart control module PCBA integrating an NB-IoT modem, ARM-based MCU, and power management circuitry on a single board. The module provides developers with a complete, ready-to-use hardware platform for low-power, wide-area IoT applications.
Key design features:
NB-IoT Communication
Integrated NB-IoT module (China Telecom version, 850MHz band)
TTL serial communication (UART) for transparent data transmission
Built-in eSIM (SIM card included, data plan not included)
Deep indoor penetration and wide coverage for urban and rural deployments
Low-Power Design
Ultra-low standby current of 7µA — extending battery life to years
Optimized power management for battery-powered applications
Efficient wake-up and sleep cycles for long-term unattended operation
Control & Integration
Integrated MCU with built-in networking and cloud service drivers
Pre-integrated cloud connectivity — ready to deploy without additional protocol development
High integration reduces external component count and simplifies design
PCB Manufacturing
Compact 63 × 37mm form factor
Wide voltage input (4-8V) with built-in power conditioning
Industrial-grade components for -40°C to 85°C operation
Design optimized for high-yield production
| Parameter | Specification |
|---|---|
| Communication | NB-IoT (850MHz, China Telecom) |
| Interface | TTL UART (transparent transmission) |
| MCU | Integrated ARM-based, with cloud drivers |
| Standby Current | 7µA (ultra-low power) |
| Input Voltage | 4-8V DC (wide range) |
| Operating Temperature | -40°C to +85°C |
| Dimensions | 63 × 37mm |
| SIM | Built-in eSIM (data plan not included) |
| Key Features | Deep indoor penetration, ready-to-use cloud connectivity |
Ultra-Low Power: 7µA standby current for years of battery life
Ready-to-Use: Integrated MCU with cloud drivers — no additional protocol development required
Industrial-Grade: Wide temperature range for demanding environments
Deep Coverage: NB-IoT 850MHz for excellent indoor and urban penetration
Manufacturing Ready: Optimized for high-volume production
Compact Design: Small form factor for space-constrained devices
Smart locks and access control systems
Smart meters (water, electricity, gas)
Smart vending machines and shared devices
Smart city infrastructure
Smart agriculture and environmental monitoring
Industrial IoT (IIoT) data acquisition
Ready to develop your NB-IoT smart device project? Contact us to learn how AnyPCBA can support your product development and production.
