GENTEX GX90-4R 904-0847-002 Remote Audible Alarm Horn Device, Red, 24-Vdc

hello everybody i am going to show you my second fire alarm product that i have bought this gentex gx90 remote horn strobe i got it off of ebay for a price of around fifteen dollars fifteen sixteen dollars so i would say this was a very good deal you can see the gentex logo on the front of the alarm underneath the speaker grill the strobe is 15 candela it says on the back label here the horn is 82 decibels at 10 feet this alarm this particular alarm was manufactured on march 31st 1998 so that means this march it's going to be 23 years old the model is gx90s-4-15wr the exact model and this is a four-wire device i wish i could test it but the thing is i want a a better power source for it and so if anybody knows how to properly and safely hook up a fire alarm appliance like this one and this one runs on 24 volts dc one hertz please let me know in the comment section because any help will