![3 Relay Card for SMART3 GC and NC [STS3REL]](http://sysaway.net/cdn/shop/products/STS3REL_grande.png?v=1652350027)
Reference:
STS3REL
Plug-in card of 3 relays for SMART 3 GC and SMART3NC detectors. Relay at 12 or 24VDC.
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