you looking at a new alarm, or the programmable remote?
it its a programmable remote along the lines of a LRT1 , its easy but very fricking tedious getting it just right as you have to be so careful when calibrating the base freq by turning the little screw.. end result is that it works though.. although dont beleive that you can use it for 4 different things... mine will open my celica, OR my MX3 , but due to the different freq range it has to be recalibrated each time so it can never do both at the same time
plus the lack of instructions doesnt help