How to find model number out on cobra alarm?

High I recently purchased a car and It has viper alarm but I wasn't high given any remotes to it and want to find model number so can purchase them where would it be? Also I have the boxes under steering wheel the one blinking red n green the cobra is over steering wheel placed against winsheild thanks siren wired in engine compartment just want to know how can make work thanks

Spencer
May 2016