Automation of Cloakroom with timer extraction fan

[johndm1957]

My downstairs cloakroom currently has a Tapo smart wall switch (no neutral required) to switch on cloakroom lights and a ceiling extractor fan with has a timed run on. The switch is controlled with a Tapo motion sensor in the cloakroom.

I’m trying to simplify my whole system, upstairs rooms are all Tapo sensors and bulbs, bit downstairs is all Hue Zigbee Motion sensors and bulbs except the cloakroom.

Is there an easy way to use smart Zigbee bulbs in the cloakroom lights?

The cloakroom light switch would obviously need to be permanently on for the smart bulbs to function, but then the extraction fan will ren constantly.
There is a switched spur high up on the cloakroom wall, the light switch is outside in the hallway.

I was hoping to find a smart Wi-Fi ceiling extractor fan, but can’t seem to find anything.

Suggestions welcome

 

[omega015]

Can you fit a little Shelly smart switch (one of their mini's) in the extractor or from the feed to the extractor?

 

[johndm1957]

Can you fit a little Shelly smart switch (one of their mini's) in the extractor or from the feed to the extractor?

I’ve seen those Shelly switches but never looked into them. Where would you suggest fitting, would it be behind the switched spur or up with the extraction fan?

 

[omega015]

Wherever its most convinient to access should you ever need to get to it again. Also taking into account the wifi signal it will need. The Shelly 1 Mini Gen3 should be suitable to use as a smart switch for the extractor. There's also the gen4 which has zigbee, matter etc.. and might be slightly smaller.

 

[johndm1957]

Wherever its most convinient to access should you ever need to get to it again. Also taking into account the wifi signal it will need. The Shelly 1 Mini Gen3 should be suitable to use as a smart switch for the extractor. There's also the gen4 which has zigbee, matter etc.. and might be slightly smaller.

Really strong Wi-Fi signal everywhere. So a Shelly on the extraction fan would seem best?
I’m a little unsure about the wiring.
If the wall light switch is left switched on, how would I wire the Shelly into the wiring going to the extraction fan?
I have just started to integrate a Home Assistant Green so there will be all sorts of ways to control the Shelly module to turn the extraction fan on and off.

 

[omega015]

Assuming no reasonably priced smart extractor (which is probably overkill anyway) yeah a shelly should be suitable. So wall switch left on, which then keeps permanent power to the extractor. So where ever you decide to fit the shelly it will need permanent live & neutral (L & N), then a jumper from L to I (Input), then the live which was going to the extractor is to come from O (Output). Hopefully that all makes sense.

Terminals	Wires
SW	Switch (controlling O) input terminal	L	Live (110 - 240 V~) wire
O	Load circuit output terminal	N	Neutral wire
I	Load circuit input terminal
L	Live (110-240 V) terminal
N	Neutral terminal

 

[johndm1957]

Appreciate the help, many thanks

 

[johndm1957]

My final solution was to use a Hue Motion sensor and a Sonoff Zigbee no neutral switch behind a standard rocker light switch.
This works perfectly with Home Assistant, but I needed to add a Zigbee dongle to my Home Assistant Green, but this now gives me the ability to add other Zigbee devices.
From my experience Zigbee devices are far more reliable than standard Wi-Fi devices

 

[omega015]

Thanks for the update. Zigbee is great and definately a good choice, if you ever struggle with signal you can get repeaters to extend the signal. Only non-battery powered zigbee devices act as repeaters, although I have struggled in the past to pair devices from other devices acting as repeaters and needed to pair in the vecinity of the main dongle or repeater.

 

[johndm1957]

All of my other downstairs and outside lights have been Hue for some time, it was just finding a decent solution for the downstairs cloakroom where I used a Tapo Wi-Fi no neutral switch previously.
I have found all Tapo stuff to be pretty good, but their light switches, Motion sensors, and some other stuff needs to use their hub. These devices have proved to be fair, but their sensors get very laggy , and the only solution has been to reboot their hub at least once per day