No. 5,585 in German
bewegungsmelder
Motion detector.
In a sentence
Der Bewegungsmelder reagiert bei jedem Schritt.
The motion detector reacts to every step.
In this sentence, 'Bewegungsmelder' is used to refer to a device that detects movement.
Ich habe einen neuen Bewegungsmelder für die Garage installiert.
I installed a new motion detector for the garage.
Here, 'Bewegungsmelder' is used to specifically describe the type of device installed for monitoring movement.
Die Wohnung ist mit einem Bewegungsmelder gesichert.
The apartment is secured with a motion detector.
In this case, 'Bewegungsmelder' implies its use as part of a security system monitoring movements.
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