Hi, small problem. I installed some low voltage downlights in a bedroom cupboard with a PIR sensor hoping it would switch on when the doors are opened. I took a live(loop) and Neutral from the bedroom light fitting to the PIR following the PIR's instructions and then to the transformer.
I powered it up, the bedroom light came on alrite but when switched off, it started flashing.
the PIR must not be lit by the lights it is controlling, why didn't you just use a £2 door switch made for the purpose?
the pir workes by sensing a moving heat source, initially you!
when you close the door it turns off after its set time delay, but the heat decaying from the lamp is enough to retrigger it & repeat ad infinitum!
Try a cold lamp (LED), or shield PIR (Not easy in cupboard) or change to door switch (preferable) as very reliable, see your fridge!
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