Hello In my experience signal form is : Header : 650ms high and 8000ms low Body : a set of 36 bits bit 0 : 650ms high and 2000ms low bit 1 : 650ms high and 4000ms low bit 0-13 : id (seems different for each sensor. When you press test, id send id+1. When you reset power, id can be different) bit 14 ...