I would like to use the Zigbee system as an alarm center. I installed window sensors and motion detectors.
Now I have noticed that this system does not work in the event of a power failure (which could also be caused intentionally via external sockets).
I use a Conbee2 and a Fritzbox. I could equip these two devices with a UPS (battery).
However, I have many devices in the house that also function as Zigbee repeaters. In the event of a power failure, these would not have any power and the connected window sensors would probably not work either.
How did you solve such problems?
Greetings Werner
Hallo,
ich möchte gern meit Zigbeesystem als Alarmzentrale nutzen. Fenstersensoren und Bewegungsmelder habe ich verbaut.
Nun ist mir aufgefallen, dass dieses System bei Stromausfall (welcher auch mit Absicht über Außensteckdosen hervorgerufen werden könnte) nicht funktioniert.
Ich nutze ein Conbee2 und eine Fritzbox. Diese beiden Geräte könnte ich mit USV (Akku) versehen.
Jedoch habe ich viele Geräte im Haus, welche auch als Zigbee-Repeater fungieren. Diese hätten bei Stromausfall keinen Strom und damit würden wahrscheinlich dann auch die verbunden Fenstersensoren nicht funktionieren.
As you said: Get a good UPS and protect all relevant devices: router, switch (if any), ap (if any), HA, other smarthome-gateways and if used a NAS.
I use a APC BackUPS 950 (APC BX950MI) for all this devices having a protected runtime of 40 minutes. After the shutdown of the NAS after 10 minutes, the remaining devices have a additional runtime of 60 minutes.
Relevant zigbee-routers placed central on every floor are protected with a small USB-UPS like this Battery Shield with selected used 18650 cells. I don’t know the runtime, but a small CC2531 or CC2530 doesn’t draw much ampere. This won’t work with mains powered plugs or lights. I would keep them separate from the security relevant zigbee devices.
exactly the mains operated lamps, a flush-mounted roller blind control, etc. are my problem.
I fear that window sensors are connected to these and therefore cannot react in the event of a power failure.
Greetings Werner
Hallo,
genau die Netzbetriebenen Lampen, eine Unterputz- Rollosteuerung usw. sind mein Problem.
Ich befürchte, dass Fenstersensoren mit diesen verbunden sind und daher bei Stromausfall nicht reagieren können.
Not suitable for your case, but for future readers,the best alarm system (for power failures) to use would be a commercial alarm system with a battery backup. I use a fairly old Crow Runner 16 with cabled and wireless (freewave,guess it is proprietary) sensors with its own IP Module. Whenever power failure occurs, the battery of the alarm keeps the system running for over 24 hrs! Also, it would be a lot more cheaper. My APC UPS connected Home Assistant server can operate for about 40 minutes, whereas the alarm system keeps running standalone for hours.
In your case, you should check the repeating graph of the zigbee network. Your window sensors might not be connected to only one repeater but multi. I think it would be best to use Battery shields for only repeaters like some IKEA zigbee repeaters. Let’s say feed your server with a UPS and use 3, 4 or more IKEA zigbee repeaters with battery shields all over the house. This should solve the problem.
What integration do you use to connect the conbee 2? As far as I know all integrations in HA offer a map you can determinate how the devices are connected.
It’s a mesh-system. No way known to me to interfere - Even if the human eye finds a better connection.
Your word made me think that you don’t know how the window-sensors are connected. Do they connect to the roller shutters? Even if close together this doesn’t mean they connect direct.
If they are connected to the rollter shutters the only way I can think of is to connect a second zigbee controller to HA (And this can’t be ZHA, as there is only one instance usable - You may use a zigbee2MQTT-Stick) and to separate the security relevant parts from the convenience parts.
