I got an optima plus2 system this as happened twice now first time on the 11/4 I turned on kitchen light panic button went off and now today came down Turing off alarm at keypad turned hall light on and panic button went again .but this time it would only reset after about 20 seconds I'm gonna loop it out later but has anybody come across this before and would the lights have anything to do with it .and battery is approx 2and half years old thanks