I suggest you re read, POXY was used with other words like "Other panels have these outputs anyway" as in no need for relays and PSU`s. FYI in terms of DB outputs it is POXY compared to a lot of others also. Remember also a 10db increase is double in sound perceived. Although 85db prolonged will cause deafness. And I`m not likely to be locked in with one and if I was it would be turned off rapidly. If you want loud try this, Please login (registration is free!) to view this link. http://www.klaxonsignals.com/images/Products/docs/datasheet/369.pdf . Put 5 around the house. I have one running 12 of these, fun when testing I can assure you.