turn 1 switch on for 10 mins then offtvb now,tvbnow,bttvb1 V! D5 M$ { |- E( m9 x
turn another 1 on then go to the other house
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; s/ b( N9 @; y* i6 j# ^7 ctvb now,tvbnow,bttvbthe hot light bulb is the first the cold light bulb is the 3rd |