The Snom SMPA1 paging amplifier has the ability to drive four logic level outputs (3.3VDC). The amplifier pinouts are provided by Snom in this article.
Upon request, IPFINITY can make available a strobe driver interface module — aka "Stroby" — to provide a 12VDC drive for powering strobe/beacon lights such as this one from Amazon.
Connecting the Amplifer, Stroby and the Strobe/Beacon
The Snom SMPA-1+ ships with several wiring harnesses. Locate the 4 wire harness and connect its wires to the corresponding colour-coded terminals on Stroby (purple, yellow, brown and black). The other end of this harness (the Molex connector) should be plugged into the terminal block marked I/O2 on the amplifier.
On the other end, Stroby presents another screw terminal block marked with red and black dots. Connect the hot lead of the strobe (red wire) to the red terminal on Stroby and the other wire from the strobe to the black terminal on Stroby.
Do not connect the black terminal to ground.
Stroby works by pulling the black line low when the yellow output (pin 3) is activated, thus presenting 12VDC across the load (beacon/strobe) to light it up.
Keep the signalling leads between the amplifier and Stroby short. The longer wire run should be between the strobe/beacon and Stroby.
The Snom amplifier provides sufficient current to drive a low current strobe, usually even when powered over PoE. Alternatively you can use an external power supply if needed. Please consult the Snom manual for current limitation information.
There is no over-current or reverse polarity protection provided by Stroby. Please check your wiring carefully before turning on the amplifier. There is a small indicator LED built into Stroby. When lit, it means that Stroby has been activated (turned on) by the amplifier.
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