Altronix LPS3 Linear Power Supply/Charger - Reliable 12V/24V Output

In this review the Altronix LPS3 Linear Power Supply/Charger is evaluated for installers and technicians who need a dependable, compact power source for security and low-voltage systems. The bottom line: the LPS3 is best for those who require a straightforward linear supply that delivers selectable 12VDC or 24VDC output with consistent current and a charger function, offering up to 2.5 amps continuous and 5 amps on demand. It stands out for its simplicity and predictable behavior compared with switching supplies in sensitive electronic environments.

Key Features

• Dual voltage selection: The ability to operate at either 12VDC or 24VDC makes it flexible for powering a variety of access control and surveillance devices without extra converters.
• 2.5 amp continuous output: Provides steady power for small to medium accessory loads while maintaining stable voltage under normal conditions.
• 5 amp on demand: Short-term current boost capability helps support temporary inrush or device startup without tripping.
• Linear topology: The linear design offers predictable output characteristics and low electrical noise that can benefit analog sensors or legacy equipment.
• Charger function: Integrated charging allows the supply to maintain batteries for standby power systems when used in proper enclosures.

Who It's For

The LPS3 is aimed at professional installers, security technicians, and hobbyists who need a reliable, uncomplicated power source for alarm panels, access control boards, or CCTV components that tolerate linear supplies. Its selectable voltage and built-in charging make it convenient where battery backup and small loads are common.

Those who should look elsewhere include projects that demand very high efficiency, extremely compact form factors, or loads exceeding the rated 2.5A continuous output. If you require advanced digital features or remote monitoring, a more feature-rich switching supply or power controller would be a better match.

Pros & Cons

Pros

• Simple dual-voltage operation reduces compatibility hassles across common security devices.
• Linear design produces low electrical noise, useful for sensitive analog equipment.
• Built-in charger capability supports battery-backed installations without extra modules.
• 5 amp on-demand allows short bursts for device startup or inrush current.

Cons

• Linear supplies are generally less energy efficient and can run warmer than switching equivalents.
• Limited to 2.5A continuous, so larger loads will need a different power solution.

Specifications

Product	Altronix LPS3 Linear Power Supply/Charger
Output voltages	12VDC or 24VDC selectable
Continuous current	2.5 amp
On demand current	5 amp
Function	Linear power supply with charger
Intended use	Low-voltage security and accessory power

Our Verdict

The Altronix LPS3 is a solid choice for installers who need a straightforward, dependable 12VDC or 24VDC linear supply with charging capability. It delivers predictable performance, low electrical noise, and a short-term 5 amp boost, making it good value for battery-backed alarm and access control systems, provided the continuous load stays within its 2.5A rating.

Frequently Asked Questions

Can this unit charge backup batteries?
The LPS3 includes an integrated charger function designed to maintain batteries for standby power when installed per guidelines.

Is the output selectable between 12V and 24V?
Yes, the supply is selectable for either 12VDC or 24VDC to match common security devices.

What is the maximum continuous current?
The LPS3 is rated for 2.5 amp continuous output with up to 5 amp available on demand for short bursts.