- Two-wire operation from module to the devices
- Silences horns and chimes over a two-wire loop
- Synchronizes strobes at 1 Hz
- Synchronizes horns and chimes to temporal 3 pattern
- Patented technology
- Interconnects modules for multiple zone synchronization
- Module controls two Style Y (Class B) circuits or one Style Z(Class A) circuit
- New NAC slave feature enables the interconnection of slavemodules over a supervised NAC loop
The MDL3 Module is designed to work with the SpectrAlert and SpectrAlert Advance series of notification appliances to provide a means of synchronizing the temporal-coded horns and chimes, synchronizing the one-second flash timing of the strobe, and silencing the horns and chimes of the horn/strobe and chime/ strobes combination over a two-wire circuit while leaving the strobes active. The Sync-Circuit module is designed to power and synchronize either two 3-amp circuits wired in Class B, or one 3-amp circuit powered as Class A. Should more than two zones require synchronization, additional modules can be added by interconnecting the "slave" input and output terminals between modules. | Dimensions | 5 1/4" L x 5 1/4" W | | Mounting | 4 11/16" x 4 11/16" x 2 1/8" back box | | Indoor Operating Temperature | 32° to 120°F (0° to 49°C) | | Operating Voltage | 12 or 24VDC and FWR unfiltered | | Operating Voltage Range (12V) | 8.5 to 17.5VDC | | Operating Voltage Range (24V) | 16.5 to 33VDC | | Maximum Load on Loop | 3A per zone | | 
