View Full Version : Hooking up a Cop light to my apt buzzer how?

World Eater
05-29-2002, 01:40 PM
I live in the back bedroom of my apt, and Iím sick and tired of missing the buzzer. I either have to A. hover around the hallway, or B. tip toe around in my room like a church mouse so I can hear the buzz. This normally wouldnít be too bad, except my friends take up to an hour or so to come over, or random people swing through when Iím not listening for anyone. What Iíve decided to do, is to connect one of those cop lights (you know the ones they take out of the glove compartment and stick on the roof.) to my buzzer. I talked to my super, and aside of him thinking Iím insane, he wasnít much help, so Iím going to depend on my beloved Dopers to help me out here. To start off, me buzzer has 3 buttons, talk, listen, and buzz the door open. I donít think there is much current going through the wires, so first my cop light will need to be plugged into something. Now when someone hits my buzzer, I assume when they are pushing the button, they are completing some type of circuit, and voila! BBBBBBBBBBBBBZZZZ I obviously need to connect a device to the circuit, but Iíll be damned if I know what. The device will have to perform the following functionsÖ.íseesí someone completing the circuit, be able to feed power, or allow power to be fed for a short amount of time to the cop light, and then cut the juice. One last concern I have is frying the buildingís intercom system, or having a wire short in my house, thus burning it to a crisp. Iím sure there are systems for hearing impaired people, but what Iím looking for is an inexpensive RadioShack solution. A nudge in the right direction would be much appreciated.

BTW everytime the light goes off, Iíll say ďDamn its about time the 10 millionth customer got hereĒ

05-29-2002, 04:25 PM
This Device (http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F006%5F002%5F004%5F000&product%5Fid=940%2D1626) from RS flashes when someone knocks on the door, it might flash when the buzzer sounds.