Magnasphere HSS-L2S-000 Single Alarm Contact, Surface Mount

The Magnasphere HSS-L2S-000 is a UL 634 Level 2 high-security surface-mounted magnetic door contact designed for SCIFs, vaults, secure rooms, and other critical intrusion detection applications. Featuring one alarm contact with open-loop or closed-loop connections, integrated magnetic defeat and removal-tamper detection, and a silver-gray anodized aluminum housing, it provides supervised door position monitoring. The sensor includes a standard 36-inch armored cable, operates with a maximum 3/16-inch contact gap, and supports electrical ratings up to 30VDC, 250mA, and 0.25W.

Magnasphere HSS-L2S-000 UL 634 Level 2 High-Security Door Contact

The Magnasphere HSS-L2S-000 High-Security Magnetic Door Contact is a surface-mounted intrusion detection sensor engineered for facilities requiring advanced protection against unauthorized door opening and magnetic tampering. Part of the Magnasphere HSS Level 2 Series, the device meets UL 634 Level 2 high-security requirements and is designed for use in Sensitive Compartmented Information Facilities (SCIFs), government buildings, military installations, secure data centers, safes, and vaults. The HSS-L2S-000 uses patented Magnasphere magnetic switch technology rather than conventional reed-switch construction, providing resistance to external and internal magnetic defeat attempts. Its single alarm contact monitors the position of a secured door, while independent tamper-monitoring circuitry helps detect attempts to manipulate or remove the sensor assembly.

The HSS-L2S-000 incorporates one alarm contact supporting either closed-loop or open-loop wiring, along with a separate closed-loop tamper circuit. The alarm connections include a white closed-loop lead, red open-loop lead, and black common lead, while the tamper circuit uses green supervised common, yellow magnet tamper, and blue magnet/pry tamper connections. Unlike resistor-equipped HSS-L2S variants, the standard HSS-L2S-000 does not include factory-installed end-of-line resistors, allowing installers to configure external circuit supervision according to the requirements of the connected alarm control panel. The sensor supports maximum electrical ratings of 30VDC, 250mA resistive current, and 0.25W switching power. Its hermetically sealed Magnasphere switching elements and fully encapsulated internal components provide resistance to environmental exposure and contact welding associated with electrical transients.

Designed for high-security door position monitoring and tamper-resistant intrusion detection, the Magnasphere HSS-L2S-000 incorporates magnetic tamper sensing and a dedicated removal-tamper mechanism. The magnetic tamper circuit responds to attempts to defeat the sensor using an additional magnetic field, while the removal-tamper assembly monitors the security of the switch housing. A concealed tamper magnet and protective cap cover a mounting screw, allowing the device to signal a tamper condition before the switch can be removed from its mounting surface. The sensor supports in-swinging and out-swinging door configurations using the manufacturer's cross-hole mounting arrangement. It integrates with compatible intrusion alarm and access control panels that accept supervised contact inputs, making it appropriate for perimeter monitoring and protected door applications where magnetic resistance and independent tamper detection are required.

The Magnasphere HSS-L2S-000 features a silver-gray anodized aluminum enclosure measuring 4.25 inches long, 1 inch wide, and 1.5 inches high, with a standard 36-inch stainless steel armored cable containing color-coded 22 AWG conductors. The manufacturer specifies a maximum magnetic operating gap of 3/16 inch (4.78 mm), with a recommended 1/8-inch (3.18 mm) actuation gap for maximum resistance to internal magnetic defeat. The device operates across a temperature range of -40 C to 80 C (-40 F to 176 F) and is suitable for indoor and outdoor installations. Manufacturer architectural specifications identify the HSS Level 2 Series as compatible with applicable ICD/ICS 705 high-security facility design requirements and classify the sensor as intrinsically safe simple apparatus when installed with the required approved interface equipment. Manufactured in the United States, the HSS-L2S-000 provides a durable high-security monitoring solution for demanding government, institutional, industrial, and critical infrastructure applications.