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I have a small job to sort out a faulty set of security lights in a private block not far from here. Having checked fifteen out of the thirty five or so bolted to the walls , the vast majority of failures is the motion detector circuit in the lower housing.
Only one has a visible crack in the sensor surface, all others are undamaged externally. Most but not all light up when power is applied, then go off after about twenty seconds.
A number of lamps have been replaced by other contractors in the past so the complete bundle consists of old halogen style, early LED type and the most recent failure appears to be less than a year old.
So what is the most likely cause of failure, heat/cold, voltage spikes or just cheap build electrics ?
Has the detector reliability improved in recent times or am I likely to be called back inside the warranty period to replace new items ?
Thanks in advance.
Only one has a visible crack in the sensor surface, all others are undamaged externally. Most but not all light up when power is applied, then go off after about twenty seconds.
A number of lamps have been replaced by other contractors in the past so the complete bundle consists of old halogen style, early LED type and the most recent failure appears to be less than a year old.
So what is the most likely cause of failure, heat/cold, voltage spikes or just cheap build electrics ?
Has the detector reliability improved in recent times or am I likely to be called back inside the warranty period to replace new items ?
Thanks in advance.