Magnasphere HSS-L2D-811 Dual Alarm Contacts with Tamper Circuit, Closed Loop
SKU
HSS-L2D-811
Model No
HSS-L2D-811
$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-811 from Magnasphere is a Dual Alarm Contact with a built-in Tamper Circuit, designed for high security applications such as SCIFs, safes, and vaults. Featuring both Normally Open (N.O.) and Normally Closed (N.C.) contacts, this sensor is compliant with UL634 Level 2 High Security Standards. Its advanced technology minimizes installation labor with embedded EOL resistors, providing unparalleled reliability and security for sensitive environments.
Magnasphere HSS-L2D-811 Key Features
- Intrinsically Safe Design: Ensures reliable operation in hazardous environments without compromising safety.
- Magnetic Defeat Resistance: Offers protection against potential tampering through both internal and external magnetic interference.
- Dual Conduit Ports: Flexible installation options with 1/2” NPT ports for top or side connections.
- BMS Device Replacement: Serves as a direct replacement for existing BMS devices, facilitating easy upgrades.
- No Installation Adjustments: Designed for a straightforward installation process, minimizing setup time.
- Advanced Tamper Circuit: Industry-leading sensor technology that detects unauthorized removal, enhancing overall security.
- Magnasphere® Switch Technology: Resists permanent contact welding caused by power surges, ensuring functionality even in extreme conditions.
- Multiple Contact Options: Available in both single (L2S) and dual (L2D) configurations, catering to diverse security needs.
- American Made Quality: Crafted using award-winning technology, ensuring superior performance and reliability.
- Compatible with Control Panels: Works seamlessly with various control panel models that accommodate contact inputs.
- Built-in EOL Resistors: Simplifies installation and enhances security with ready-to-use embedded resistors.
- Competitive Pricing: Offers high security features at an affordable price, making it accessible for various applications.
Magnasphere HSS-L2D-811 Detailed Specifications
| Product Type | Dual Alarm Contacts with Tamper Circuit |
| N.O. Contact Rating | 1K ? Parallel Embedded EOL Resistor |
| N.C. Contact Rating | 1K ? Series Embedded EOL Resistor |
| Compliance Standard | UL634 Level 2 High Security Standard |
| Installation Type | Surface Mount |
| Conduit Connection Size | 1/2” NPT (Dual Ports) |
| Made In | USA |
| Application | SCIFs, safes, vaults, and high-security installations |
| Manufacturer | Magnasphere |
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