Yes for both of my refrigerator sensors. There’s a concrete floor and multiple concrete walls between one of the sensors and the hub and it still works perfectly.

“NaziAI” has a real ring to it.

If you’ve not ordered from Aliexpress be aware their website is set up to display deep discounts for first time orders by default. Once you log in after your first order the discounts disappear and the prices are much higher.

Pretty crappy business practices, but when a product is 1/4 the price of buying locally, still hard to pass up. For $4 a pop I put leak sensors under every sink and toilet in the house. At the time they were $17 each on Amazon. Also be aware it is very easy to buy a wifi version instead of Zigbee because of the way the website is set up. Many Tuya wifi devices require always on Internet access.

I’m in the U.S. and it’s $4-$5. Free shipping with a $10 purchase. Surprised it’s so much more in the E.U.

It’s this one: https://www.aliexpress.us/item/3256805942369090.html?gatewayAdapt=glo2usa

One of my main goals when setting up home automation was making sure the devices I’m using do not need cloud access. The only exception is an old Honeywell thermostat that I’ll replace eventually. Everything else, including security camera occupancy detection continues to work if the Internet goes down.

My router only has one open port and that’s for Wireguard. It’s set to a random port number and appears closed to external scanners so I believe my network security is reasonably good. Devices that like to connect to external servers like TP-Link cameras and bulbs are blocked by the router’s firewall.

For occasional external access I use Tasker to detect what network I’m on and then automatically connect to Wireguard when away from home. After the WG tunnel’s up it starts Home Assistant Companion. It’s not as seamless as Home Assistant Cloud, but for occasional use it’s fine.

Warning about Home Assistant: It’s ridiculously addictive. It is also so flexible that I’ve been able to implement almost anything that comes to mind and ended up with more sensors and automations than I ever thought I’d use.

Seems to be. It reads within 1 degree of a digital refrigerator thermometer.

I use the round version of the same Tuya temperature sensor in my refrigerator and with Home Assistant. For $4 I wouldn’t hesitate trying one in a protected area outside. As long as it’s not directly exposed to rain or sun it’ll probably work fine.