this unit is great easy to install great options for 40 bucks.
only down fall is it does not have built in relays for door lock wires and unlock wire so i had to wire up two relays but for 40 dollars what do you want works great also the shock sensor is not that great set the sensativity all the way up and you have to pound on the truck really hard to get it to go off

This is a great alarm for a great price, installed it myself, soldered and heat shrunk the connections. 1994 ford explorer

Installed system and hooked it into my door lock and ignition systems in order to control them with minimal problems.

I bought Crimestopper SP-101 about 6 month ago. It is a good equipment for that value.

I installed this unit and it works well. It is a little touchy. It will go off even with a stiff wind. This does make me feel good, better a little touchy than not work when needed

Highly recommend CS-SP101. Easy installation and user-friendly programming. Install on a Ford explorer with no relay. It has advance features and well produced brand with a low price tags on the net.