... sensor mould BLJ-ME001ABrief introduction:BLJ-ME001A is a type of reflex infrared sensors controller, which ... bell, corridor, the alarm of watching TV in a short way,automatic door, the advertising light box, ... Power Consumption: average current less than 40μA, 4pcs batteries can supply power 2 to 3 years( ... the detection distance longer when you are wearing a light-coloured clothes(white, yellow and so ...