Used to replace my Sonoff sensors that occasionally drop offline and never reconnect.I already have a 3rd reality magnetic door sensor which has been installed for well over a year with no issues so hopefully these will be as good.

Werkt perfect met ZHA in Home Assistant. Batterij gaat lang mee.

Gets 5 stars like all the different ThirdReality Zigbee devices I have, stable and use normal batteries that don't die all the time. It would get 10 stars if there was an external probe model, Zigbee ones are all but impossible to find, hope the manufacturer is looking, think freezers/water lines/crawl spaces/hot tubs etc. Photos are of a doable hack for fairly technical people and it easily fits back into the case. Requires removal of the SHT40 thermal sensor and decoupling capacitor both located on board tongue and 2 pull up resistors on the two traces back to the processor, the only reasonable sized solder points for data lines, all four devices removed via hot air are very very tiny SMD devices. SHT40 SMD pads are too tiny to solder wires to but +3V and GND have nice plated through holes near the processor. Note colours on green/yellow data lines end-to-end, must not be reversed, the only real challenge is soldering those onto the old SMD resistor pads. Added back two 10K pull up resistors and a 100nf decoupling capacitor at the external probe connector, per the SHT40 data sheet, can't read old values. Drilled one extra air vent hole 1/16in and enlarged the adjacent one in the case to install the 2.54mm 4 pin connector, solder inside holds the connector in place, the external probe connector is crimped - E size bare type. Wire is flexible 30 AWG stranded. All the bits are available on Amazon except the SHT40 probes which are $3ea direct from AE China, 1 out of 10 was DOA. Been running seven 3M long probes for over a week with SmartThings hub, stable so far and temps match unmodified sensors as expected. Have not attempted to immerse one of those cheap probes in water, it is vented for humidity measurement, very skeptical about the waterproof claim, would seal the vent with waterproof/glue type heat shrink tubing as a minimum.

Werte werden im Fritz Smartgateway angezeigt, aber nicht in der Fritzbox und nicht in der Fritz Smart Home App. Manche Sensoren frieren ein oder verlieren den Kontakt zum Smartgateway, obwohl eine Zigbee Steckdose in 3 Meter Reichweite ist. Habe im Moment 5 Stück in Betrieb die auch funktionieren. Habe aber auch schon 3 Stück zurück geschickt, wegen den oben genannten Probleme.

Voilà : il est possible de proposer un article sans fioritures, à un prix correct, et qui s'intègre dans le réseau ZigBee facilement.L'étalonnage d'usine est très correct, ce qui est également très appréciable.