System Sensor MDL3R Sync Circuit Module

The System Sensor MDL3R is a synchronization circuit module designed to coordinate compatible fire alarm notification appliances. It synchronizes horn and strobe operation so visual strobes flash together while audible devices maintain coordinated signaling throughout the protected area. (buildings.honeywell.com)

Designed for commercial fire alarm notification systems, the MDL3R provides two independently controlled synchronization zones and can support Class B or Class A notification circuit arrangements. Its red housing provides clear identification within fire alarm installations. (buildings.honeywell.com)

Product Functions

• Synchronizes visual strobe operation
• Synchronizes audible horn operation
• Supports Temporal Code 3 signaling
• Provides two independently controlled zones
• Supports Class B notification circuits
• Supports Class A notification circuits
• Allows synchronized horn silencing
• Supports commercial notification systems
• Coordinates multiple notification appliances

Synchronization Performance

The MDL3R uses the System Sensor synchronization protocol to coordinate compatible notification appliances. Synchronized strobe operation helps ensure multiple visual appliances flash together rather than independently, providing consistent visual emergency signaling throughout a protected space. (prod-edam.honeywell.com)

The module also supports synchronized Temporal Code 3 horn signaling. When configured for silenceable operation, the audible portion of compatible horn strobes can be silenced while the visual strobes continue synchronized flashing. (prod-edam.honeywell.com)

Circuit Configuration

The MDL3R provides two Style Y output zones that can operate independently. The two zones may also be combined to support a Style Z notification circuit configuration when required by the system design. (prod-edam.honeywell.com)

Multiple synchronization modules can be interconnected when larger notification systems require synchronized operation across additional circuits. Proper installation and circuit configuration should follow the applicable manufacturer documentation and fire alarm system design.

Protection & Applications

Suitable for:

• Commercial Fire Alarm Systems
• Horn Strobe Synchronization
• Strobe Synchronization
• Temporal Code 3 Notification
• Office Buildings
• Hospitals
• Healthcare Facilities
• Schools and Universities
• Hotels
• Government Buildings
• Industrial Facilities
• Warehouses
• Commercial Notification Systems

MDL3R Datasheet