Overview
The Sentrol 2505A-L magnetic contact switch is a rugged industrial surface-mount sensor engineered for reliable perimeter security monitoring. Part of the Sentrol 2500 series, this unit combines a high-strength extruded aluminum housing with advanced potting compound encapsulation to deliver dependable performance in demanding commercial and industrial applications. Ideal for metal doors, overhead doors, fences, and gates, the 2505A-L provides tamper-resistant detection with minimal false alarms thanks to its generous sensing range.
Key Features
- Wide Gap Sensing: 3-inch nominal sense range reduces installation complexity and minimizes service calls
- Robust Aluminum Housing: Brushed anodized aluminum with ABS plastic end caps resists corrosion and physical impact
- Armored Cable Lead: 3-foot stainless steel armored cable protects against mechanical damage and vandalism
- IP67 Sealed Design: Complete potting encapsulation ensures reliable operation in wet, dirty, or harsh environments
- High Cycle Rating: Reed contacts rated for 10 million cycles, hand-soldered and 100% factory-tested for longevity
- Normally Open Contact: Low-voltage switching configuration compatible with standard alarm control panels
Technical Specifications
- Operating Voltage: 100 V-AC
- Contact Rating: 0.5 A (maximum)
- Power Rating: 7.5 W/VA
- Contact Configuration: Normally Open (NO)
- Operating Temperature Range: −40°F to +150°F
- Sensing Range: 3 inches (nominal wide gap)
- Enclosure Rating: IP67
- Housing Material: Brushed anodized aluminum with ABS plastic end caps
- Cable Type: 3-foot stainless steel armored lead
- Series: 2500 Series
- Mounting Style: Surface mount
- Contact Type: Reed switch (rhodium-plated)
Typical Applications
The Sentrol 2505A-L is widely deployed in perimeter security, access control, and intrusion detection systems across industrial facilities, commercial properties, and high-security installations. Common applications include:
- Metal industrial doors and overhead rolling doors
- Fences, gates, and barrier monitoring
- Equipment cabinet and enclosure security
- Loading dock and vehicle bay access points
- Secure storage rooms and vaults
- Critical infrastructure protection where reliable, tamper-resistant switching is essential
Compatibility & Replacements
Compatible With
- Standard 100 V-AC alarm control panels and receivers
- Low-voltage security system wiring (Class 2 and Class 3)
- Conventional hardwired burglar alarm systems
- Building automation and access control systems
- Stand-alone door/window monitoring circuits
Replaces / Drop-In Replacement For
- Sentrol 2505AU-L (alternate part designation)
- Other 2500 series wide-gap magnetic contacts with similar voltage and switching requirements
- Legacy Edwards Signaling armored magnetic contact switches
Works With
- Honeywell alarm panels and receivers
- GE/Interlogix security control systems
- Conventional hardwired alarm receiver protocols
- 24-hour monitoring services and central stations
- Any Class 2 or Class 3 low-voltage alarm control circuit
