Cheap window wireless sensor integration into KNX ?

[2ndsky]

Maybe you could use enOcean sensors but I don't know if you get a working system with enOcean for 25 Euro for each window (the KNX gateway alone costs between 200 and 300 Euro I guess).

EDIT: or you can look for FS20 reed contacts like this: http://www.elv.de/2-kanal-tuer-fenst...ttbausatz.html

[eborges]

Hello



Does anyone know a cheap way of integrating wireless window opening sensors into KNX?
I have the following requirements:

• I need to identify what window is open (for visualisation purposes);
• Cost should be no more than 20 or 25 Euros per window for a set of 14 windows ( 14 sensors + receiver) ;
• The wireless receiver could be connected KNX module binary inputs, to USB port of a Raspberry Pi, preferably, or to my LAN ( I'm open to suggestions ...).

I have a KNXnet/IP gateway.

I’m searching for references to what window sensor and what wireless receiver I could use.


Any help could be useful.

Thanks
E.Borges