Magnasphere HSS-L2S-004 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-004 from Magnasphere is a single alarm contact with tamper circuit, closed loop. 1K ? series, 1K ? parallel embedded EOL resistors on closed loop alarm contact. 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 high reliability and secures against tampering attempts.
- Built-in EOL resistors available: Simplifies installation and minimizes wiring issues.
- Unique cross hole mounting feature: Eliminates the need for L and Z brackets, speeding up the installation process.
- Retro-fit for existing BMS devices: Offers easy upgrades without needing new installations.
- No adjustment required for installation: Guarantees user-friendly setup, saving time and increasing efficiency.
- Industry’s most secure removal tamper sensor/circuit: Provides unprecedented protection against unauthorized access.
- Magnasphere switch technology: Resists permanent contact welding from lightning, power surges, and stun guns, ensuring long-term reliability.
- Single and dual alarm contacts available: Offers flexibility for diverse applications based on security needs.
- American made using award-winning Magnasphere switch technology: Supports local manufacturing and quality craftsmanship.
- Compatible with control panel models that accept contact inputs: Enhances interoperability with existing security setups.
- Competitively priced: Delivers high security without compromising on budget.
- Intrinsically Safe, Simple Apparatus: Ensures safe operation in various environments.
Magnasphere HSS-L2S-004 Detailed Specifications
| Type | Single Alarm Contact with Tamper Circuit |
| Model | HSS-L2S-004 |
| Configuration | Closed Loop |
| Resistance | 1K ? series and 1K ? parallel embedded EOL resistors |
| Mounting | Surface Mount |
| Standards | Listed to UL634 Level 2 High Security Standard |
| Usage | Designed for SCIFs, safes, and vaults |
| Manufacturing | American Made |
| Additional Features | Compatible with existing BMS systems, various configurations available |
Tools & Calculators


