ginbot86 wrote:coppercarl wrote:ginbot86 wrote:Looks like a Sentry, and by the horns on it's its maybe a 16V1T-B.
Charlie, perhaps you can confirm this model number?
It's not a 16V1t-B. The rows of horns are to close together. It's got to either be a 15V2T in 3 phase or a 20V2T.
But how can a dual-tone siren have the same number of horns on both rows?
Because there are a different amount of ports in each individual horn. On dual tone Sentry's, aside from the 40V2T, there is 1 port in the bottom row of horns and 2 ports in the top row. There are 8 Horns on most Sentry's so the bottom row would have 8 ports and the top would have 16 ports, making it an 8/16 port siren. Sentry is different in that way, being they put more than one port in a horn. The 40V2T is different in the way that it has 5 horns on the top and bottom. Each bottom horn has 2 ports and each top horn has 3 ports, making any 40V2T a 10/15 port siren. Do you get it now?