Magnasphere HSS-L2D-812 Dual Alarm Contacts with Tamper Circuit, Closed Loop
SKU
HSS-L2D-812
Model No
HSS-L2D-812
$369.00
Product Highlights
- Intrinsically Safe, Simple Apparatus
- Resistant to External and Internal magnetic defeat
- Dual 1/2″ NPT conduit ports provide top or side connection options
- Replacement for existing BMS devices
- No adjustment required for installation

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The HSS-L2D-812 from Magnasphere is a Dual Alarm Contacts, 1 N.O., 1 N.C. with Tamper Circuit, Closed Loop. This high-security sensor is designed for SCIFs, safes, vaults, and other secure applications, meeting rigorous UL634 Level 2 High Security Standards. Featuring embedded EOL resistors for easy installation and enhanced security, the HSS-L2D-812 provides reliable protection against tampering and electronic defeat, making it an excellent choice for high-security systems.
Magnasphere HSS-L2D-812 Unique Features
- Intrinsically Safe: Designed as a simple apparatus that ensures safety during operation in various environments.
- Magnetic Defeat Resistance: Robust against both external and internal magnetic attacks, ensuring continuous operational reliability.
- Flexible Conduit Ports: Dual 1/2” NPT conduit ports allow for versatile connection options from the top or side, aiding installation versatility.
- Direct Replacement: Functions as a direct replacement for existing BMS devices, simplifying upgrades to higher security standards.
- Adjustment-Free Installation: No adjustments are needed during installation, reducing installation time and effort for users.
- Tamper Detection: Incorporates the industry’s most secure removal tamper sensor/circuit, enhancing theft deterrence.
- Contact Welding Resistance: Magnasphere® switch technology prevents permanent contact welding, providing resilience against power surges and interference.
- Multiple Options: Available in both single (L2S) and dual (L2D) alarm contacts to suit varying security needs.
- American Made Quality: Crafted in the USA using award-winning Magnasphere switch technology for reliability.
- Compatible Systems: Designed to work with control panel models that accept contact inputs, ensuring widespread usability.
- Built-in EOL Resistors: Features built-in EOL resistors to simplify installation while enhancing security.
- Competitive Pricing: Offered at a competitive price point, providing high security without compromising affordability.
Magnasphere HSS-L2D-812 Detailed Specifications
| Model | HSS-L2D-812 |
| Type | Dual Alarm Contacts (1 N.O., 1 N.C.) |
| Tamper Circuit | Yes |
| Embedded EOL Resistor (N.O. Contact) | 2K ? Parallel |
| Embedded EOL Resistor (Tamper Circuit) | 2K ? Series |
| Security Rating | UL634 Level 2 High Security |
| Installation Type | Surface Mount |
| Conduit Port Size | 1/2” NPT |
| Manufacturing Origin | USA |
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