System Sensor MDL3W SpectrAlert Advance Sync-Circuit Module 12/24V, White

Ensure consistent, code-compliant notification across your facility with the System Sensor MDL3W SpectrAlert Advance Sync-Circuit Module. Designed for fire and security professionals, this sync module simplifies wiring by enabling two-wire operation from the module to SpectrAlert Advance devices while synchronizing strobe flash timing at 1 Hz and horns/chimes to Temporal 3. With 12V/24V compatibility and support for Style Y (Class B) or Style Z (Class A) circuits, the MDL3W integrates cleanly into existing control panel modules and NAC configurations.

Patented technology lets you silence horns or chimes on horn/strobe and chime/strobe combinations over the same two-wire loop while leaving strobes active—ideal for minimizing audible disruption during investigations or after-hours monitoring. The module also interconnects for multi-zone synchronization and includes a NAC slave feature for supervised loops, providing reliable performance for security, surveillance, and monitoring systems.

Ideal for installers and system integrators looking to streamline notification appliance control and compliance, the MDL3W enhances clarity and reliability across fire alarm and security installations. Add the MDL3W to your next project to simplify wiring and improve notification consistency.

• Simplifies installation with two-wire operation to notification appliances, reducing labor and wiring complexity
• Ensures clear, code-compliant alerts by synchronizing strobes at 1 Hz and horns/chimes to Temporal 3
• Allows selective silencing of horns/chimes while keeping strobes active for visual-only notification during investigations
• Supports 12V/24V input and configurable for Style Y (Class B) or Style Z (Class A) circuits for flexible system integration
• Interconnectable and NAC‑slave capable for multi-zone synchronization and supervised NAC loops in larger security deployments