I want to share how I organized emergency battery lighting in case of a power outage.
Foreword, this group of automations arose from the problems that currently exist in Ukraine, the lights were turned off for 5-10 hours a day. It is very difficult to switch to battery lighting manually every day.
Materials used for these automations.
- Aqara T2 relays;
- Aqara wireless switches;
- Aqara motion sensors;
- Aqara leak sensor;
- rechargeable low-voltage power supplies for +/- 5-24 V with automatic charging from 220 V.
- LED lamp units 24 volts (5 W).
Types of automations. - signaling and turning on automations when the industrial network is turned off;
- signaling and turning off automations when the industrial network appears;
- turning on/off the light in manual mode;
- turning on/off the light in automatic mode (on-call backlight mode in the intermediate room (corridor, toilet, bathroom);
Equipment installation.
- I placed the battery packs indoors (in my case on the cabinets in the rooms), there is 220 volts there to connect them to the industrial network. The T2 relay is connected to +/- 24 V of the battery, and the T2 contacts to the LED lamps.
- I used the water leak sensor to control the industrial network, I made a detailed description earlier on the forum ( Alternative use of the Aqara leak detector ).
- I use the motion sensors that are already used in the house for automatic On/Off light.
- I use the same Aqara contactless remote switches that turn on the main light in the house, they are in each room and turn on the main light (220V).
Automations. - On automation batteries.
IF
- There is a water leak (no industrial network)
THEN - On automation 1
- On automation 2
- On automation n
- On automation n+1
Note, turn on all automations that are involved with batteries +/-24V.
- Off automation batteries.
IF
- There is no water leak (industrial network is normal)
THEN - Off automation 1
- Off automation 2
- Off automation n
- Off automation n+1
Note, turn off all automations that are involved with batteries +/-24V.
- Manual On/Off light (from a wireless button that turns on the lamps at 220V).
IF
- button N is pressed (also the button that turns on the light 220V).
THEN - On/Off contact 1 of the T2 relay (a +/-24V LED lamp is connected to the contact)
Note, I showed simplified automation, in reality I use the same buttons in each room as for turning on 220V, it is convenient because you don’t need to think about whether you are turning on 220V or +/-24V
- Automation of the standby backlight.
Here I will not describe the automation specifically because they can be in each plan. For example, I have 4 motion sensors for one standby lighting in the corridor.
Conclusion, the described automation shows the great flexibility of the Aqara system.
A suggestion for the developers of future Aqara T3 relays to provide for the possibility of their operation from a voltage of +/-12V. Practice has shown that at this stage there is a great lack of support for this voltage.
Thank you for your attention and reading my descriptions.