Looking for a Lower Explosive Limit detector that i can get tied into the GC2. I found this but it seems pretty spendy… I presume the alarm relay could be hardwired to one of the hardwired slots on the GC2 terminal bus or hardwired into a DW10. Not completely sure how this would get tied in or wired up. Any thoughts on this?
SPDT relay should be able to wire to NO or NC circuits.
NO configuration could be used with GC2 terminal block hardwired zones.
NC configuration could be used with either GC2 terminal block or DW10.
sorry… i thought i would get an email notification on some of these responses but didn’t. Guess i need to check the box so i get notified. 
Seems like that should be fine. Thank you!