Alarm Siren Setup
So ever since discovering I could have home assistant work double duty as a home alarm system, I’ve been looking for the best solution for a siren system.
This was my criteria:
- Indoor and outdoor siren
- Must have a backup battery system
- Must not rely on wifi (as then the router would need a backup battery too)
- Must be loud.
So I took a little punt on some products I’d been eyeing for a while and its paid off!
So here is the Kerui Wireless Alarm system components I bought:
- J008 Outdoor Wireless Siren/strobe
- J009 Indoor Wireless Siren/strobe
- F8 Transmitter
- RC531 Remote
These units operate on 433mhz.
Effectively what I have done is wired the F8 transmitter directly to the GPIO pins of my RPi. I’ve added a GPIO switch inside home assistant that triggers the transmitter. The transmitter, being paired with both the indoor and outdoor siren, then triggers the sirens based on my automations.
Both sirens have internal backup batteries too. So when they have power, the batteries are charging. If the power drops out (or is cut by burglars), they use their internal batteries. My RPi runs off a UPS so there will always be a backup system to trigger the alarm.
Kerui also make an outdoor siren with solar power, which eliminates the need for a power supply to the outdoor siren.
The cherry on the cake is the little remote, which sends different commands to the sirens (Arm, Disarm, Volume and Panic). I have taught my Broadlink RM pro these commands, so I can trigger audible tones when I am arming or disarming the alarm system. I can also choose to mute these at certain times if I wish to do so via the automations. I have also set it to “beep” as a warning for entry delay times.
- So far distance is very good.
- The indoor siren is not super loud even at max volume (though it does have volume control all the way down to silent).
- The outdoor siren is super loud!
- The outdoor siren does not have a tamper switch, however, there is a header on the board that when shorted triggers the siren directly. So I may add my own tamper switch.
- The transmitter can also be replicated with any RF sender, or could be wired into an ESP8266 if you’re not running a RPi.
Let me know what you think, or if you have any ideas how I can improve this system.
Also happy to answer any questions anyone may have