MDL3R — System Sensor sync-circuit module, red, for SpectrAlert and SpectrAlert Advance notification appliances. 12/24 VDC.
The MDL3R synchronizes notification appliances so horns, chimes and strobes operate in step across the system instead of drifting independently. It produces temporal-coded output for horns and chimes and a 1 Hz flash for strobes, and it lets the horns and chimes of combination horn/strobe and chime/strobe devices be silenced over a two-wire circuit while the strobes keep flashing — the behavior required during alarm silence.
The module powers and synchronizes either two 3-amp circuits wired Class B, or a single 3-amp circuit wired Class A, and operates at 12 or 24 VDC. Where more than two zones need synchronizing, additional modules interconnect through the slave input and output terminals; up to 11 slave modules can be driven from one master.
The MDL3R is the red version; the MDL3W is the same module in white.
Documents
FAQ
How many circuits can one MDL3R synchronize?
Each module powers and synchronizes two 3-amp Class B (Style Y) circuits, or one 3-amp Class A (Style Z) circuit.
What if more than two zones need to be synchronized?
Add more modules and interconnect their slave input and output terminals, so all modules stay synchronized together.
What voltages does it work on?
Regulated 12 VDC/FWR (8.0 to 17.5 V) or 24 VDC/FWR (16.0 to 33.0 V), with a maximum load of 3 amps per loop.
Is there a version for Canada?
Yes, the MDL3RA is the red version for Canada. The MDL3W is the white version.
