Do battery-powered motion sensors draw any significant current when no motion is present? This is a Heath-Zenith wireless system (about $40) that sends a signal to an indoor AC powered receiver when it detects motion. I'd like to know exactly how these things work. No current at idle?
How long might the sensor's 2 AA batteries last with an anticipated 3 or 4 triggers per day? Most would be false alarms from local cats. The packaging says 1 year, but doesn't specify at what trigger rate - or does that really matter? Thanks.
K2