THIRDREALITY Zigbee Contact Sensor, Door and Window Monitor, Home Automation, Works with Home Assistant, SmartThings, Aeotec, Homey, Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required

Works with SmartThingsIt keep saying trying pair but already paired in the background.No issue

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 algorithmsOptimized the power detection logicOptimized the trigger filtering algorithmFrom 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 .

Works with Echo 4th generation and most importantly doesn't drop connection unlike another cheaperbrand did. I'm using this with a Honeywell DualTec pir relay output to trigger motion on my driveway and alert Alexa to announce there is motion detected.

Great Product. Fast setup with clear instructions. Strong adhesive is keeping it firmly to the door. No need for an extra hub if you have an Echo device with a ZigBee hub inside.

Purchased a pack of 4 to integrate into my Home Assistant setup. Choice was made due to the Works With Home Assistant integration, Zigbee protocol, good price, and use of AAA batteries.Okay the good stuff...paired with HA flawlessly, one 10min firmware upgrade and we're cooking. There is a single entity opened/closed available. The contact distance is great and I got slightly more than the 15mm stated (I wanted to use this on some PVC doors that are not flush and contacts still detected). The priceSigh, the bad stuff...in 24 hours of install the behaviour is unreliable, automations that are setup work around 40% of the time with lights not triggering correctly. 2 of the 4 devices drop off the zigbee network repeatedly (1 is close to the zigbee hub, 1 is in a room full of other working and robust zigbee devices), needing either a hard reset of HA and/or waiting an unpredictable amount of time for them to behave themselves. Just the single entity present with no temp etcUnfortunately it's a hard no from me