Magnasphere HSS-L2S-003 Single Alarm Contact With Tamper Circuit, Closed Loop
- Resistant to External and Internal magnetic defeat
- Built-in EOL resistors available
- Unique cross hole mounting feature eliminates need for L and Z brackets on most installations
- Retro-fit for existing BMS devices
- No adjustment required for installation

The HSS-L2S-003 from Magnasphere is a single alarm contact with tamper circuit, closed loop. 1K ? series embedded EOL resistor on closed loop alarm circuit. MAGNASPHERE has created the L2 Series HSS “High Security Sensor” – The Next Generation of sensors for high security standards for SCIFs, safes and vaults, and all other high level secure applications. The acclaimed MAGNASPHERE HSS devices are listed to UL634 Level 2 High Security Standard. In addition to their vastly increased security they offer many labor saving installation features, including embedded EOL resistors. The L2S single alarm contacts are surface mount.
One of the unique features of the HSS L2S is the ability to add embedded EOL resistors and related electronics to offer the ultimate in security. We offer a variety of embedded EOL resistor configurations and values. In addition to the surface mount models, MAGNASPHERE has expanded its L2 series HSS product line to include the revolutionary L2C series for installations where concealed sensors are desired for both security and aesthetics.
UL634 is the standard for all switches and connectors used in alarm systems. The 9th edition (2007) eliminated the previous BMS high security categories. Learn about the difference between High Security Levels 1 & 2. The ICD 705, sets the standards for SCIF intrusion detection systems for the government Intelligence Community, and requires the use of HSS Level 2 devices.
Features
- Resistant to External and Internal magnetic defeat: Ensures maximum security by preventing bypasses.
- Built-in EOL resistors available: Streamlines the installation process and enhances security.
- Unique cross hole mounting feature: Eliminates need for L and Z brackets on most installations, saving time and labor.
- Retro-fit for existing BMS devices: Facilitates easy upgrades without the need for complete system overhauls.
- No adjustment required for installation: Simplifies the installation process, allowing for a more efficient setup.
- Industry’s most secure removal tamper sensor/circuit: Provides advanced security features that deter tampering.
- Magnasphere switch technology: Resists permanent contact welding (lightning, power surges, stun guns), ensuring long-lasting reliability.
- Single and dual alarm contacts available: Offers flexibility to meet various security needs and applications.
- American made: Utilizes award-winning Magnasphere switch technology, supporting domestic manufacturing.
- Compatible with control panel models: Integrates easily with systems that accept contact inputs, enhancing compatibility.
- Competitively priced: Provides exceptional value without compromising on quality and security.
- Intrinsically Safe, Simple Apparatus: Designed to be safe and easy to use in various environments.
Magnasphere HSS-L2S-003 Detailed Specifications
| Product Type | Single Alarm Contact with Tamper Circuit |
| Resistor Type | 1K ? Embedded EOL Resistor |
| Mounting Type | Surface Mount |
| Security Standard | UL634 Level 2 High Security Standard |
| Made In | USA |
| Compatibility | Works with control panels that accept contact inputs |
| Applications | SCIFs, Safes, Vaults, High Security Installations |
| Features | Embedded EOL resistors, Tamper detection, Retrofittable |
Tools & Calculators


