AVM FRITZ!DECT 400 (portable button for smart home control, control smart sockets FRITZ!DECT 200 and FRITZ!DECT 210, can be used for FRITZ!BOX with DECT base) : Amazon.com.be: Tools & Home Improvement
DECT Switch -
AVM DECT 440: FRITZ!DECT 440 - Smarter Taster mit Display bei reichelt elektronik