Security & Surveillance Power Supplies

Certified AC-DC power adapters for surveillance cameras, smart alarm hubs, and video intercom systems

Quankang designs and manufactures security and surveillance power supplies for OEMs and device brands worldwide. For 36 years, we have built stable, low-noise AC-DC power adapters for equipment that must operate continuously and without interruption, from surveillance cameras and smart alarm hubs to residential and commercial video intercom systems.

Our power solutions are engineered for the demands of always-on security hardware, with stable voltage output, low ripple and noise, strong EMC performance, and global safety certifications. With in-house design, testing, and production under one roof, plus an EMC laboratory that helps identify interference risks early, we help customers move from development to market faster and with more confidence.

*Share your specifications. Our engineering team typically responds within one business day.

Why Security & Surveillance Devices Demand Reliable Power

Security and surveillance devices are expected to run continuously, often in electrically noisy and installation-sensitive environments. Unlike general-purpose consumer electronics, surveillance cameras, smart alarm hubs, and video intercom systems depend on stable power to maintain image quality, signal integrity, access response, and uninterrupted monitoring. Even minor power irregularities can lead to dropped footage, false alarms, communication errors, or shortened hardware life.

For OEMs and device makers, power supply selection affects far more than basic operation. It influences product reliability, EMC performance, thermal stability, certification readiness, and long-term field performance.

Six Engineering Requirements Define The Difference:

Stable Voltage Output

Stable voltage is essential for clear video transmission, reliable alarm processing, and responsive intercom communication. It helps prevent resets, flicker, signal instability, and unexpected device interruptions.

Low Ripple and Noise

Clean DC output reduces electrical disturbance in sensitive surveillance and communication circuits. Low ripple and noise help preserve video quality, audio clarity, and stable long-term operation.

Strong EMC Performance

Security devices often operate near wireless systems, network equipment, and other electronic controls. Strong EMC performance helps reduce interference and improves compatibility with nearby electronics and communication systems.

Continuous-Duty Reliability

Surveillance cameras, alarm hubs, and intercom systems are often expected to run 24/7. Their power supplies must maintain stable output over long operating periods without premature degradation.

Thermal and Circuit Protection

Long operating hours and varied installation conditions can place ongoing stress on both the adapter and the device. Built-in protection against over-voltage, over-current, short circuit, and overheating helps improve operational safety.

Global Certification and Integration Flexibility

Security products are often built for multiple markets and installation formats. Certified power supplies with flexible plug, cable, and enclosure options help simplify global deployment and OEM integration.

Applications

Key factors for selecting a power supply for security and surveillance devices
Device Type	Typical Voltage	Key Power Requirement	Recommended Protection
Surveillance Cameras	5V / 12V / 24V	Low ripple, stable output over long cable runs	Thermal, short-circuit, over-voltage
Smart Alarm Hubs	5V / 9V / 12V	Low standby power, continuous reliability	Thermal, over-voltage
Video Intercom Systems	5V / 12V	Low noise, reliable standby-to-active performance	Over-voltage, short-circuit, thermal

Certified Safety and EMC Compliance
Designed to meet IEC/EN 62368-1 safety requirements and EN55032 Class B EMC standards.
Stable Voltage Output
Well-regulated DC output supports reliable video transmission, alarm processing, and intercom communication without unexpected interruptions.
Low Ripple and Noise
Clean power helps reduce interference and supports clear video, stable audio, and dependable system performance.
24/7 Continuous Operation
Engineered for always-on applications that require long-term reliability in continuous monitoring and access control environments.
Built-In Protection
Includes over-voltage, short-circuit, and thermal protection for safe long-term operation.
Flexible Output Options
Available in common output voltages such as 5V, 9V, 12V, 24V, and 48V.
Global Safety Approvals
Supports international market access with certifications including CE, UL, FCC, CB, PSE, and UKCA.
OEM/ODM Customization
Custom output, plug type, cable length, enclosure, labeling, and branding are available.
Environmental Compliance
RoHS and REACH compliant materials support global environmental requirements.
Proven Engineering Experience
Backed by 36 years of manufacturing expertise, 212 active patents, and customers in more than 50 countries.

Frequently Asked Questions

What is a medical power supply?

The most important starting points are IEC/EN 62368-1 for electrical safety and EN55032 Class B for EMC performance. Depending on the target market, manufacturers may also require certifications such as CE, UL, FCC, CB, PSE, and UKCA to support product compliance and global market access.

Why can’t a standard consumer adapter be used for security devices?

Standard consumer adapters may not deliver the voltage stability, low ripple, EMC performance, or continuous-duty reliability required for security and surveillance equipment. In always-on systems such as cameras, alarm hubs, and intercoms, unstable or poorly matched power can lead to dropped footage, false alarms, communication errors, overheating, or reduced product life.

Which security devices commonly use external AC-DC power adapters?

External AC-DC power adapters are widely used in surveillance cameras, smart alarm hubs, video intercom systems, access control devices, and other connected security products. An external design helps simplify integration, supports easier global deployment, and allows flexible power matching across product lines.

Can Quankang customize a power supply for my device?

Yes. Quankang provides OEM/ODM customization for output voltage and current, DC connectors, cable length, plug type, enclosure design, labeling, and branding. Our engineering team can also help match the right power solution to your device’s electrical, mechanical, and market requirements.

Are your power adapters suitable for continuous 24/7 operation?

Yes. Our security and surveillance power adapters are designed for stable output and long-term reliability under continuous use. Built-in protection features such as over-voltage, short-circuit, and thermal protection help support safe operation in always-on environments.

Do your power supplies support global market requirements?

Yes. Our power supplies are designed for international deployment, with global safety certifications, wide input compatibility, and flexible plug options for different regions. This helps OEMs simplify compliance and use a consistent power platform across multiple markets.

Power Your Next Security Product with Confidence

Whether you are developing a new surveillance camera platform, launching a smart alarm hub, or refining a video intercom system, the right power supply improves reliability, simplifies compliance, and supports long-term field performance. Share your voltage, output, certification, and form factor requirements, and our engineers will recommend a qualified model or develop a tailored solution for your application.

Start Your Security & Surveillance Power Project

Send us your voltage, output, certification, and form factor requirements today. An engineer will follow up with recommended models or customization options, typically within one business day.

Security & Surveillance Power Supplies

Why Security & Surveillance Devices Demand Reliable Power