Mercedes S-class W140 Becker unit

Up for sale is a Working, in excellent condition Mercedes W140 S-class Becker unit. I am fairly sure this is an alarm control unit, however I am not totally sure, as it does not come up in my EPC. Part number 1408204526[09] This comes with a 30 day warranty. These are quite expensive to buy new, so don't! get a used but functional one right here for a LOT less.