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HomeSecurity & Surveillance
Security & Surveillance
Shenzhen Keyulong Technology Co., Ltd.

Security & Surveillance

HomeSecurity & Surveillance

Power Supply Applications in Security & Surveillance

Providing stable power for IP cameras, NVRs, access control systems and more

Security and Surveillance.jpg

In security and surveillance systems, the power adapter is a critical yet often overlooked component that ensures stable equipment operation. IP cameras, NVRs, access control systems — their reliable performance depends on a dependable, anti-interference, long-life power adapter. Below is a comprehensive overview of power application solutions and selection references for various security and surveillance devices.

I. Overview of Power Supply Applications for Security & Surveillance Equipment

Equipment CategoryTypical ProductsRecommended PowerRecommended Voltage/CurrentPower Requirements
IP CamerasIndoor domes, outdoor bullets, PTZ cameras, etc.5-48W12V1A / 12V2A / 12V3A, etc.24/7 operation, anti-interference
NVR Recorders4-channel/8-channel/16-channel NVRs, etc.12-36W12V1.5A / 12V2A / 12V3A, etc.HDD startup current support, good heat dissipation
Access Control SystemsAccess controllers, magnetic locks, facial recognition, etc.6-24W12V1A / 12V2A / 24V1A, etc.Low ripple, momentary high current capability
Alarm SensorsInfrared detectors, smoke alarms, etc.3-6W12V0.5A / 9V1A, etc.Ultra-low standby power
Video DoorbellsVideo intercom, doorbell cameras, etc.6-12W12V1A / 5V2A, etc.Compact size, easy installation

II. Power Supply Applications for IP Cameras / Network Cameras

2.1 Indoor IP Cameras

Equipment TypeTypical PowerRecommended Power SpecsPower Requirements
Indoor dome cameras, etc.5-12W12V1A, etc.Compact size, low ripple
Indoor PTZ cameras, etc.6-10W12V1A, etc.Stable power during motor rotation
Indoor fisheye cameras, etc.5-8W12V1A, etc.Stable panoramic image output

Applicable Scenarios: Offices, shopping malls, hotels, home indoor surveillance

2.2 Outdoor IP Cameras

Equipment TypeTypical PowerRecommended Power SpecsPower Requirements
Outdoor bullet cameras, etc.12-18W12V1.5A / 12V2A, etc.Wide temperature operation, waterproof and dustproof
High-speed PTZ cameras, etc.24-48W12V2A / 12V3A / 24V2A, etc.Stable high-power output during PTZ rotation
Infrared night vision cameras, etc.12-18W12V1.5A, etc.Stable power during IR illumination
4G wireless cameras, etc.10-15W12V1A, etc.Low power consumption, compatible with solar power

Applicable Scenarios: Campus perimeter, parking lots, construction sites, rural road surveillance

III. Power Supply Applications for NVRs / Network Video Recorders

Equipment TypeTypical PowerRecommended Power SpecsPower Requirements
4-channel NVRs, etc.12-18W12V1.5A, etc.Supports 1 HDD startup current
8-channel NVRs, etc.18-24W12V2A, etc.Supports 2 HDDs, good heat dissipation
16-channel NVRs, etc.24-36W12V3A, etc.Supports 4 HDDs, long-term operation
32-channel NVRs, etc.36-48W12V4A / 24V2A, etc.High power output, rack-mountable installation

IV. Power Supply Applications for Access Control Systems

4.1 Access Controllers and Identification Terminals

Equipment TypeTypical PowerRecommended Power SpecsPower Requirements
Access controllers, etc.6-12W12V1A, etc.Long-term stable operation
Facial recognition access, etc.12-18W12V1.5A, etc.Low ripple, does not affect recognition accuracy
Fingerprint access, etc.6-10W12V1A, etc.Stable power supply
QR code access, etc.6-12W12V1A, etc.Stable screen display
Video doorbells, etc.6-12W12V1A / 5V2A, etc.Compact size

4.2 Access Control Locks

Equipment TypeTypical PowerRecommended Power SpecsPower Requirements
Magnetic locks, etc.12W12V1A, etc.Momentary startup current
Magnetic locks, etc.24W12V2A / 24V1A, etc.High current momentary output
Electric bolt locks, etc.6-12W12V1A, etc.Power-to-open or power-to-lock
Motor locks, etc.12-18W12V1.5A, etc.Stable motor drive

V. Power Supply Applications for Alarm Systems and Sensors

Equipment TypeTypical PowerRecommended Power SpecsPower Requirements
Infrared detectors, etc.3-6W12V0.5A / 12V1A, etc.Ultra-low standby power
Smoke alarms, etc.3-5W9V1A / 12V0.5A, etc.Complies with fire safety standards
Gas alarms, etc.3-6W12V0.5A, etc.Safe and reliable
Door magnetic sensors, etc.1-3W12V0.5A, etc.Extremely low power consumption
Sounder strobes, etc.6-12W12V1A, etc.Momentary high current during alarm

VI. Power Supply Specification Quick Selection Guide

Output VoltageOutput CurrentRated PowerApplicable Equipment
12V0.5A6WInfrared detectors, door magnetic sensors, low-power alarms, etc.
12V1.0A12WIndoor IP cameras, access controllers, video doorbells, etc.
12V1.5A18WOutdoor bullet cameras, facial recognition access, 4-channel NVRs, etc.
12V2.0A24WHigh-speed PTZ cameras, 8-channel NVRs, magnetic locks, etc.
12V3.0A36W16-channel NVRs, multi-camera centralized power supply, etc.
24V1.0A24WMagnetic locks, electric bolt locks, etc.
24V1.5A36WLarge access control systems, PTZ power supply, etc.
24V2.0A48WMulti-channel centralized power supply, large surveillance systems, etc.

 Plug Types: China, US, EU, UK, Korea, Japan, Australia, etc. | Output Interfaces: 5.5×2.1, 5.5×2.5, Type-C, waterproof aviation connectors, etc. | Cable Lengths: 1.0m / 1.5m / 3m / 5m, etc. All customizable.

VII. Power Supply Selection Recommendations for Different Scenarios

Scenario 1: Small Office / Retail Store Surveillance

Equipment: 4 indoor IP cameras, 1 4-channel NVR

Recommended Power Supply: 12V1A × 4 (individual) or 12V3A × 1 (centralized) + 12V1.5A × 1

Power Requirements: Compact size, full certifications, low standby power

Scenario 2: Large Campus / Factory Surveillance

Equipment: 8 outdoor bullet cameras, 4 high-speed PTZ cameras, 1 16-channel NVR, 2 access control systems

Recommended Power Supply: 12V2A × 8 (wide temp, waterproof) + 12V3A × 4 + 12V3A × 1 + 12V2A × 2

Power Requirements: MTBF ≥ 50,000 hours, full certifications, strong anti-interference, wide temperature operation

Scenario 3: Smart Building / Community Access Control

Equipment: 2 facial recognition access systems, 2 magnetic locks, 2 video doorbells

Recommended Power Supply: 12V1.5A × 2 + 12V2A × 2 + 12V1A × 2

Power Requirements: Output ripple ≤200mV, low standby power, V0 flame-retardant enclosure, full certifications

Scenario 4: Remote Outdoor Surveillance

Equipment: 2 4G wireless cameras, 1 solar power system

Recommended Power Supply: 12V1A (low power, wide temp -20℃~70℃, waterproof)

Power Requirements: High efficiency, low power consumption, waterproof and dustproof, lightning protection, full certifications

VIII. Product Form Factor Description

 Wall-mount —— Indoor cameras, access controllers    Desktop —— NVRs in server rooms, centralized power     USB Chargers —— Mini indoor cameras, outdoor access

IX. Certification Information

Security and surveillance equipment is exported to different countries, and power adapters must meet the corresponding market access requirements. Below are some of the certifications we offer. Contact us for more details.

CCC    CE    UL    FCC    UKCA    PSE    KC    RoHS    ERP

 Different countries and regions have different certification requirements for power supplies. Please select the corresponding certified version according to your target market.

Get Your Security & Surveillance Power Solution

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Sales Inquiries: 18129821159 

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