THIRDREALITY Zigbee Contact Sensor 4 Pack, Door and Window Sensor for Home Security and Smart Home Automation, Works with Build-in Zigbee Hub,hub Required.

I bought 12 of these to replace all of another brand (S*O*N*O*F*F) which uses 2032 button cells, they paired with any of the Hubitat models within about 10-15 seconds whether they were 1m or 10m away. The driver it picked up was the built in Generic Zigbee Contact Sensor (no temp) They all needed an upgrade from 0x30 to 0x3F which was easily done via Hubitat within about 10mins, about 60 secs per 10% block, the progress can only be seen in the live logs for the Hub. This gives you: Optimized the network joining and reconnecting algorithms Optimized the power detection logic Optimized the trigger filtering algorithm From what I have experienced, the upgrade procedure is well protected and never bricked any of them, each 10% block is transferred and checksumed, at 100% the upgrade is transferred to its flash memory. The device still has live operation during the upgrade process. I made a mistake on the first one by unpairing/re-pairing while it was upgrading, simply because I did not realise anything was happening viewing the device page. When I found where I could see the progress, it had stopped at 30%, after 2 mins I realised the upgrade had been cancelled by my actions without any harm. The upgrade was just started again and completed without error. The great thing about these 3rdReality devices is that they use a modern hall effect sensor to trigger via the magnet instead of an antique reed switch, so they can be mounted offset slightly on windows and doors, the max detection range is about 25mm so best to stick with 15mm or less if the magnet is not on the same plane. As long as you dont have any poor/ chatty/ proprietary Zigbee protocol devices on the Hub and have good plug in repeater mains sockets between far off devices to create a good Zigbee mesh they operate automations in Rule Manager within a second , no matter how far away they are from the Hub. I am very impressed with this brand and have purchased 8 Temperature/Humidity lite sensors, again uses 2 x AAA supplied and also a couple of the waterproof soil moisture/temperature sensors to assist in the automated garden watering .

These are great door/window sensors that have been super reliable for me so far. I was tired of a few other brands falling off my Zigbee network, so I went to trusty ThirdReality and haven't been disappointed. They are a bit bigger than alternatives, but that's because they pack a couple of AAA batteries which I expect to last a long time (given their record with other Zigbee devices). It's been several weeks and no battery issues so far; I would guess they'll last months or even years depending on usage. ThirdReality is also a Home Assistant partner, which means they actually test their stuff with Home Assistant and ZHA for their Zigbee stuff. It's perfectly compatible with my Sonoff Zigbee radio, as well as the Home Assistant ZBT-2 I recently switched to. They're a bit on the large size and not particularly pretty, but I don't think you could find a more reliable contact sensor for doors or windows (or drawers, or car chargers, or toilet lids… whatever you freaks are automating!) or a better value anywhere else. If you have the physical space, I'd highly recommend them!

Ottimo articolo perfettamente supportato da Zigbee2MQTT per Home Assistant, il sensore del campo magnetico consente di avere una distanza considerevole tra il sensore ed il magnete, il che lo rende perfetto per finestre e porte dove la chiusura non è a filo. Funziona con batterie AAA rendendolo compatibile con comuni batterie ricaricabili e sembra consumare veramente poca batteria una volta installato. Ha inoltre un led che si accende quando lo stato cambia da aperto a chiuso, per segnalare il rilevamento. Fornito con due batterie alcaline AAA, viti per montatura e nastro biadesivo già correttamente tagliato sulla forma dei due componenti (non applicato, quindi se lo volete montare con le viti non serve rimuovere il nastro adesivo). Possibili miglioramenti: Supporto opzionale di Matter over Thread, evitare le batterie integrate in confezione per un prezzo dell'articolo inferiore (così chi vuole compra e/o usa le ricaricabili risparmiando qualcosina).

These are really good sensors, having 2 AAA batteries makes them more reliable. If you are using home assistant/z2m they aren't bindable

I purchased these to help with various automations around the house including turning lights on and off, warning if freezer/refrigerator doors are left open, etc. and they work perfectly with my Home Assistant setup. The devices were instantly recognized by my Sonoff Zigbee 3.0 USB Dongle Plus (connected to my Pi5 running Home Assistant) and I could setup everything from there. So far, zero complaints as they work like a charm. For those folks frustrated with the mounting tape included with these such that upon removal the devices can crack, I simply used 3M Command Damage-Free Hanging Strips to make moving them super easy. Attached is a picture of the one I have installed atop the inside of my pantry door. I moved it from one spot to another using the Command strip and it came off damage free.