LED floodlight flashes when motion sensor is connected - what could be the cause?

But he is on 220V.

LX-06 twilight movement sensor

supply voltage: 220-240V AC 50-60Hz
maximum rated load: 1200W, LED 100W
motion detection radius: max 12m
angle of operation: 180 degrees
housing colour: white
operating time: 5s - 10min
two adjustment parameters: time; brightness level
protection class: IP44
working temperature: -20°C - +40°C
warranty: 2 years consumer

SylwesterNowak wrote:

But it is for 220V.

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Yes, it is rated for 230V operation. But in series with an underpowered load it will not work.

Post a scan or a photo of this manual with the schematic, because I can't find it.

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Well, that's a lime, mate.

SylwesterNowak wrote:

Serially connected sensor

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Since you've connected it in series, that's wrong, because it's not a series sensor after all (hence the lack of minimum power information).
Write down what you connected the wires from the sensor to. Take photos.

SylwesterNowak wrote:

Could this action be the result of a faulty sensor or does the cause lie elsewhere?

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Try replacing the floodlight with a regular light bulb.

zbich70 wrote:

hence no minimum wattage information

If it is NEXUS....

PRODUCT FEATURES:
motion detector with three adjustment ranges: operating time, light intensity and detection sensitivity,
detection angle / range: 360 degrees / 2 – 12 m (<24°C),
load: 1 – 1200 W (for incandescent sources), 1 – 300 W (for led and compact fluorescent sources), .
operating time: min. 10 s +-3 s, max. 8 min +-2 min,
light intensity range: 3 – 2000 lux,
operating temperature: -20 – +40°C,
detected movement speed: 0.6 – 1.5 m/s,
power consumption: 0.45 W (during operation), 0.1 W (in standby mode),
height for installation: 2,2 – 4 m.

Unless this is some KOBI, it varies, as values are only given for incandescent and fluorescent sources and not for LED.

SylwesterNowak wrote:

I have a led floodlight mounted on the outside of my house. I have decided to attach a motion sensor to it which I bought on allegro.

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I have my doubts as to whether the sensor is suitable for outdoor use.

I actually connected the sensor incorrectly. I corrected according to your advice and it is ok:) .