Eagle Eye MS14A Sensor and Robo Dog

[susan r.]

I have an MS14A Eagle Eye Sensor used with
a Robodog (electronic barking dog unit).
After working properly for a number of
weeks, the unit will only sporatically
work.  I do not believe it's low battery
problem.  The sensor activates but the dog
doesn't.  I've changed the code on occasion
and that seems to help.  Don't know why I
should have to change the code or why the
system just stops working.  Should I
replace the sensor?  Any ideas, please?

[Walt2]

From the little I have been able to figure out so far, if the RoboDog looses power, it will "forget" its "learned" unit code. 

I don't know what they were thinking.  The RoboDog seems to be a half-baked initial attempt to eliminate the house and unit code wheels.   They eliminated the unit code wheel, but still kept the house code wheel.