- #43588414 – Home security alarm system © leekris
- #45365807 – Notruf © Matthias Buehner
- #60712575 – blaue Stunde © djama
- #60928548 – Men’s and woman’s hands hugging a tree © zlikovec
- #61047107 – Control Room © viappy
- #61348795 – Modernes, schönes Badezimmer – modern bathroom with spa area © Christian Hillebrand
- #63503067 – digicode © pixarno
- #64183831 – solar panels on roof © hansenn
- #67686206 – planning security systems © gpmax
- #69128996 – Man dialling out on a landline telephone © Gajus
- #70194408 – Holzhaus weiss Abendstimmung © KB3
- #75707948 – Moderne Firmengebäude in Köln © Jürgen Fälchle
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