Magnasphere Corp HS-L1.5-111 Dual Contact Switch

Product Description

The MAGNASPHERE CORP HS-L1.5-111 is a dual-contact magnetic switch configured in a normally closed loop at Level 1 sensitivity, with an 18-inch lead wire. It is a special application contact device designed for security, access control, and monitoring installations where high-reliability magnetic sensing is required. The closed-loop configuration provides a fail-safe signal state, meaning any loss of connection or field disruption is immediately detectable by the monitoring panel. Licensed security installers and low-voltage technicians are the primary trades that install and service this type of device.

This switch is intended for special application contact installations where standard reed-switch technology is insufficient. The Level 1 designation indicates a high-security sensitivity rating suitable for demanding perimeter protection or tamper-detection scenarios. The 18-inch lead length provides adequate slack for concealed door, window, or frame installations in both residential and light commercial settings. It ships as a single unit and is typically used in pairs or in series within a supervised alarm loop circuit.

Key Features

• Dual-contact design provides redundant sensing for increased security reliability
• Normally closed loop configuration enables fail-safe supervised circuit operation
• Level 1 sensitivity rating suitable for high-security special application installations
• 18-inch lead wire allows flexible routing in concealed or tight installation spaces
• Sold as a single unit for precise quantity control on service or new-construction jobs

Compatibility

Designed as an OEM-style replacement or new-installation component for special application magnetic contact security circuits. Verify panel input requirements and loop supervision specifications before installation.

Installation Notes

Installation should be performed by a licensed low-voltage or security systems technician in accordance with applicable local codes and NEC Article 725 for Class 2 and Class 3 remote-control circuits. De-energize and disarm the alarm loop before connecting or disconnecting any contact leads to avoid false triggers or panel faults. Ensure lead wires are routed and secured to prevent mechanical stress on the connection points. Consult the manufacturer data sheet to confirm gap tolerances and mounting orientation requirements before final placement.