I have three of these devices at home and could add a few more. They do double duty as temperature sensors for my thermostat and motion detection for occupancy detection. Powering on in OpenHAB is very similar to powering on any other battery powered Z-Wave device. Make sure it stays active until configuration is complete (a long press on the inner button will do this for you). OpenHAB will generate the XML when your mount has completed successfully. All three devices I have work well with the OpenHAB Z-Wave binding and provide reliable reports. They also don't consume a lot of battery and run for over a year. There is an adjustable sensitivity which can be useful if you have pets. I had to set the sensitivity below the maximum (range 0-11) to avoid my 60 lb dog being spotted. I don't know how accurate they are in terms of temperature or lux, but the units I have at least agree with each other.
π° Govee Water Detectors, Adjustable 100dB Audio Alarm Sensor, Highly Sensitive Leak and Drip Alert, Ideal for Kitchen Bathroom Basement (Battery Included)
9 Review
Wireless Aqara Water Leak Sensor white CN
12 Review
Interconnect Lithium Battery Powered Kidde Smoke & Carbon Monoxide Detector with Voice Alert - Combination Smoke & CO Alarm
9 Review
Xiaomi Mi Smart Sensor Set
45 Review
Clear Disposable Emergency Rain Poncho with Hood for Adults - 20 Pack
8 Review
π AquaPod Kit 2.0: BPA-Free & Made in USA! Emergency Water Storage Container, Hurricane Survival (65 gallons) - Great for Larger Tubs!
8 Review
π½οΈ S.O.S. Rations Emergency 3600 Calorie Food Bar (Cinnamon & Coconut, 2 Pack)
8 Review
π SOS Food Labs, Inc. 3 Day Emergency 3600 Calorie Food Bar - 72 Hour Package with 5 Year Shelf Life, Compact Size: 5"H x 2"W x 4.5"L
8 Review