I recently installed two outside lights, both the same, each having a built-in (non-adjustable) PIR. They are on the wall of a 'garden house' wooden building. They are on the same end wall, about 3m apart.
When the sensors detect heat/movement at night, both of the fittings flash on and off continually.
When the customer told me about it I had a 'doh' moment and realised that it must be because one light is interfering with the other light's sensor, and vice versa: the sensor detects light and switches its associated light off again thinking 'its daytime. i shouldn't be operating'.
But ..... I asked to customer to cover up one of the sensors and then to trigger the other sensor, thinking that would 'prove' the idea of them interfering with each other..... but the same pattern of flashing on and off still happens. So now I'm not too sure.
Any ideas? I'm going back there in the morning.
The wiring is: fed switch running to the L+N into the connector block in the first fitting, and the second light is looped on from that connector block L to L and N to N, the intention being that the second fitting will be independent from the first. Am I being really dumb here?
I realise that i might in the end only be able to take the L loop on to the second light from the sensor return in the first light, and disable the sensor in the second light fitting, meaning that the second light is also operated from the first sensor.
Any help gratefully received:blush2:.
When the sensors detect heat/movement at night, both of the fittings flash on and off continually.
When the customer told me about it I had a 'doh' moment and realised that it must be because one light is interfering with the other light's sensor, and vice versa: the sensor detects light and switches its associated light off again thinking 'its daytime. i shouldn't be operating'.
But ..... I asked to customer to cover up one of the sensors and then to trigger the other sensor, thinking that would 'prove' the idea of them interfering with each other..... but the same pattern of flashing on and off still happens. So now I'm not too sure.
Any ideas? I'm going back there in the morning.
The wiring is: fed switch running to the L+N into the connector block in the first fitting, and the second light is looped on from that connector block L to L and N to N, the intention being that the second fitting will be independent from the first. Am I being really dumb here?
I realise that i might in the end only be able to take the L loop on to the second light from the sensor return in the first light, and disable the sensor in the second light fitting, meaning that the second light is also operated from the first sensor.
Any help gratefully received:blush2:.
