... 50mA• Standby Mode: Green Led flashes once every 30 seconds• Alarm Mode : Red Led quickly flashes 4 times ... with unit chirping every 5 seconds, then repeat,• Low-bat Indicator:Chirp every ... unit is sensing• Green LED: Flashes every 30 seconds to indicate the unit is operating properly. The ... pattern is 4 short beeps, followed by 5 seconds of silence, followed by 4 short beeps with ...