Wireless window contacts

[Yannick Kalokerinos]

Hello Guys

As I don't have wires running to all doors and windows, I was looking into the Loxone Air Door sensors.

A set of 4 sensors and 1 Air extension would set me back 360 euros, which is a lot more than I'm willing to pay for that functionality.

So now I'm wondering if anyone has any ideas on how to do this more cost effective.

I can see more or less two solutions

- Some kind of 433mHz sender/receiver combo that uses digital inputs on the Loxone to tell it which doors are open/closed

- A low power wifi/BLE/... device that can tell my Loxone over IP which doors are opened.

The first solution seems unreliable since there is no two way communication. If a message from the sensor fails to reach the miniserver there's no way to see if it's open or closed.

The second solution I assume would not work on a battery for very long.

So, I'm very open for your suggestions :)

Thanks

[Thomas]

Any STANDARD RF system has some limitations : for all OPEN/CLOSE operations you have to limit battery usage by sending messages only when STATUS changes.
When your door is open(closed) for a long time, there is a time limitation preserving battery discharge : for example  30s : after this time emitter stops sending signal.

Look here (very attractive price but ... battery usage ...)
http://www.pluscom.pl/satel-re-2k-sterownik-radiowy-2-kanalowy-p994.html

Either you can use EnOcean system, KNX RF,  Air Loxone system or any radio alarm system (which saves battery life cycle) ... the costs are higher than 360 €
either ... use wire system ...

Hope it helps.


 

[Harry Phelps]

I wonder if the WiFi versions of these might be useful?

http://www.ti.com/ww/en/wireless_connectivity/sensortag2015/?INTC=SensorTag&HQS=sensortag