Saniflo alarm not adequate

[Pocster]

So this crap battery powered high water alarm worries me . Just tested it , batteries apparently flat even though replaced only 3 weeks ago .

Not much faith in this . Could be flat and I wouldn’t know until kitchen flooded 

 

So want a pressure switch that links to a mains powered but battery backup unit . Unit has a light to indicate it’s actually on and also possibility to trigger a zigbee relay so can notify HA 

Most of these alarms operate on a float which I don’t want .

Pressure switches seem to be industrial or maybe a washing machine type pressure switch ???

Any solid suggestions on a pressure switch , alarm box that will work together suitably appreciated 

Edited 11 hours ago by Pocster

[Pocster]

Maybe this alarm box ?

 

https://www.tritoncontrols.co.uk/alarms-and-controls/basic-alarm-easyfit.html?ppc_keyword=&gad_source=1&gad_campaignid=12120096619&gbraid=0AAAAACdOt02h4JZ2Q8Pdc71YfcucXK6V4&gclid=CjwKCAjw1dLDBhBoEiwAQNRiQThOWqB0p_yPqPWb-ZbaDP_56QCHJGeU_7bjHp0DB25wdPJVVM12UBoC-98QAvD_BwE

 

But a suitable pressure sensor switch seems to be a bit of a minefield of possibilities 

[Mr Punter]

I don't understand where the pressure switch would fit in.  It is normally float type switches for these applications.

[Pocster]

5 minutes ago, Mr Punter said:

I don't understand where the pressure switch would fit in.  It is normally float type switches for these applications.

The saniflo has a pressure switch . You drill a hole in the top of the saniflo , place a plastic tube it it . The saniflo then sits ontop the unit with the pressure switch in the head of the tube .

[Pocster]

So I’m going to use a standard phone charger to a usb step down I.e to 3v . Wire it into a zigbee door sensor . Then wire dry contacts from reed switch to alarm panel . This should get reliable HA in event of the alarm .

Its just the pressure sensor - might take a punt .