Second opinion: Stealth and sleeper are the same thing. Two namees to desscribe having the switch on the sync button. The other style has been refered to as gameplay. The only difference between them circuitwise is that sleepers have one I/O wired to the sync button, and gameplay has one or two tacts wired to the same I/O. In otherwords, you could put the sleeper code in a gamplay wiring and it would work. The code is different between the two.