BRK Electronics AC10-500B

around 1 30 this morning my fire alarm here start chirping every minute that lets me know that the 9-volt battery needs replacing so i got up and uh just disconnected everything but my wife told me that i'm ocd because i got to know how these things work so looking at this uh fire alarm you see that green light at the bottom it should stay green and there at the top the led light should blink red every minute that lets you know the 110 volts are 120 volts is working so i'm gonna show you how to test your alarm just hold this button down for like two to three seconds and you hear the chirp it'll do that one two three then one two three and that lets you know hey it is good so i'm gonna show you how to change the battery you just pull that little latch back slide it open and take the nine volt battery out make sure you put it in the same way you took it out but i'm going to show you a det