Hardwired Smoke Alarm

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daryah
Posts: 15
Joined: Thursday 09 June 2016 22:43
Target OS: NAS (Synology & others)
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Hardwired Smoke Alarm

Post by daryah »

Hi all

Any help in identifying a hardwired (mains connected) smoke alarm that also talks to the rfxtrx433 would be appreciated.

Cheers
Hiro

Sent from my SM-T520 using Tapatalk
setup: Domoticz@SynNAS; RFXTRX 433; Response E. Alarm, Teqin IP PTZ Camera, Mercury Socket, 1byOne Chime; SSE smart meter
plan: Lightwave RF Dimmers & PIR, integ. evohome heating
niceandeasy
Posts: 102
Joined: Thursday 28 January 2016 22:25
Target OS: Raspberry Pi / ODroid
Domoticz version: 3.8153
Location: NL
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Re: Hardwired Smoke Alarm

Post by niceandeasy »

You're excluding a lot of smoke alarms with that hardwired requirement. Finding such that also talks to the rfxtrx433 will be hard, indeed.

May I propose getting a battery-powered one. Put a rechargeable battery in it and connect a mains-powered DC powersupply to that, via a diode and a charging resistor. This will keep that battery topped up. No need for changing batteries anymore and it will still work if mains power drops out.
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