I am looking for a solution, maybe someone has already solved a similar problem, namely replacing the motion sensors in a system that has been installed for about 19 years and is based on a SIR system from Doepke Norden.
The sensor has no markings on the outside and the manufacturer's symbol is unknown, but it is a bit complicated to get inside and I would like to leave it for last if I have no other option. In the pictures I show the sensors that are installed there which control the lighting in the corridors.
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The sensor has no markings on the outside and the manufacturer's symbol is unknown, but it is a bit complicated to get inside and I would like to leave it for last if I have no other option. In the pictures I show the sensors that are installed there which control the lighting in the corridors.
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