i jus got a decent alarm and wanted to install the back up battery and sirens.. can i purchase any brand and theyll work with the regular alarm i have? jus a quick questionn yo

 

probably, but i would get DEI ones.. why trust some other company not known for making good security products?

 

go with the dei back-up battery and mini siren, Also don't buy thoses dam dei batteries off ebay. Three members from here and four from t-i have had problems with them. They won't hold a charge or they fail with then a week or two. I tried to help of couple of them buy exchanging them but dam my rep was like dam you exchanged three in one week,lol. If you do get one from ebay make sure it comes in the plastics box that can't be opened, Thoses are the new series, not the one in the blue box. There is a reason why they are going for 10-15 buxs on the net below dealer cost. Not saying all of them are bad and there are no trust worthy sellers, Just make sure you can send it back if there is a problem.