The Altronix AL175UL is a UL Listed switching power supply and charger for access control systems. Specifically, it provides two PTC-protected 12VDC or 24VDC outputs from a single 115VAC input.
First, the AL175UL converts mains into a selectable 12VDC or 24VDC bus. Then, one output drives an electric lock with selectable Fail-Safe or Fail-Secure switching during fire-alarm trigger. In addition, the second auxiliary output is unswitched and powers readers, controllers, or other accessory devices. As a result, a single AL175UL handles both lock control and auxiliary power in compact installations.
Altronix AL175UL — Verified Specifications
- Input: 115VAC, 60Hz, 0.6 A (69 VA system requirement)
- Outputs: two (2) Class 2 power-limited, individually PTC-protected; selectable 12VDC or 24VDC
- Output 1: switched lock output with Fail-Safe or Fail-Secure selection
- Output 2: unswitched auxiliary power output
- Built-in battery charger; 400 mA max charge current
- Filtered, electronically regulated output with short-circuit and thermal-overload protection
- Automatic switchover to standby battery on AC loss
- AC input and DC output LED indicators
- Operating temperature: 0 °C to 49 °C (32 °F to 120 °F)
- Storage temperature: -20 °C to 70 °C (-4 °F to 158 °F)
- Relative humidity: 85% ± 5%
- Listing: UL Listed for Access Control System Units (UL 294)
Important Application Note — Not a Fire-Alarm Power Supply
The AL175UL is positioned for access control with optional fail-safe lock release on fire-alarm trigger. However, the supply itself is not UL 864 listed and is not a fire-alarm power source. Therefore, do not install the AL175UL inside a UL 864 fire alarm control unit. Alternatively, ask about Altronix’s UL 864 9th-edition product family for fire-alarm DC power needs.
Order or Get Application Help
To order the Altronix AL175UL or get help wiring fail-safe/fail-secure switching, call 1-888-557-0558. You can also email sales@lifesafetycom.com.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 5.1 lbs |
|---|---|
| Dimensions | 3.5 × 7.5 × 8.5 in |
| Condition | New |
| Manufacturers | Life Safety |
| Part Type | Replacement Part |






