Amazon.com: Sengled Smart Window & Door Sensor, Hub Required, Compatible with Alexa, Google Assistant and SmartThings, Echo 4th, Echo Show 10, Echo Plus, 2 Count (Pack of 1) : Everything Else
Amazon.com : tolviviov Alpha Contact Sensor - Compatible with tolviviov Alpha Home Alarm System-HUB Needed : Electronics
Amazon.com: YoLink Outdoor Contact Sensor, LoRa 1/4 Mile World's Longest Range Smart Door Sensor, Universal Contact Sensor, Alexa, IFTTT, IP63 Waterproof for Indoor/Outdoor, App Notifications - Hub Required : Tools & Home
Amazon.com: WiFi Door Sensor, NEO Smart Door/Window Sensor, Detect Open/Close, Support USB Charged and Battery Powered, Support WiFi 2.4GHz, No Hub Required, Work with Alexa and Google Home Assistant : Tools &
Amazon.com: Zwave Door Sensor Window Sensor, Z-Wave Plus Enabled Aeotec 3-1 Door Window Sensor 7 Pro, Zwave Hub Required, Gen 7, White (Door/Window Sensor 7 Pro) : Tools & Home Improvement
Amazon.com: WiFi Door Sensor, TESSAN Smart Window Contact Sensor Compatible with Amazon Alexa, Google Assistant, No Hub Required, Sends Alerts, Wireless Remote Alarm, Programmable with Smart Life Devices : Electronics
Amazon.com: THIRDREALITY Zigbee Contact Sensor 3 Pack, Door and Window Sensor for Home Security and Smart Home Automation, Works with Build-in Zigbee Hub,hub Required : Electronics
Aqara Motion Sensor P1 Plus Aqara Water Leak Sensor, REQUIRES AQARA HUB, Zigbee Connection, Alarm System, Remote Monitor and Control, Smart Home Automation - - Amazon.com
Amazon.com: YoLink Smart Vibration & Shock Sensor, Generator, Pump Running, Glass Break, Anti-Tamper, Vehicle Alarm, Hub Required : Tools & Home Improvement
Amazon.com: D-Link Wi-Fi Water Leak Sensor and Alarm Starter Kit, Whole Home System with App Notification, AC Powered, No Hub Required (DCH-S1621KT) : Everything Else
Aqara Smart Hub M1S Plus 3 Aqara Water Leak Sensors, Wireless Water Leak Detector For Alarm System and Smart Home Automation - - Amazon.com
Amazon.com: Wyze Home Security Core Kit: Hub, Keypad, Motion Sensor, Entry Sensors (x2); Compatible w/ Wyze Cam, Leak & Climate Sensors; 3 Mo. of 24/7 Professional Monitoring Service Incl., Subscription Required
Aeotec SmartThings Door/Window Sensor, Multipurpose Sensor, Works with Smart Home Hub: Amazon.com: Tools & Home Improvement
Amazon.com: ZWave temperature, humidity, dew point sensor: Aeotec aërQ, wireless, battery powered, SmartThings sensor, Z-Wave Plus, Z-Wave hub required : Appliances
Aqara Smart Hub M1S Plus 3 Aqara Door and Window Sensor, Zigbee Connection, Alarm System, Remote Monitor and Control, Smart Home Automation - - Amazon .com
Zwave Water Sensor: Aeotec Water Sensor 7 Pro, with Flood, Temperature, Humidity Sensor, SmartThings Sensor Compatible, Z-Wave Plus, S2, SmartStart, ZWave hub Required - - Amazon.com
YoLink Smart Home Starter Kit: Water Sensor 4-Pack & Hub Kit - Sensor Compatible with Alexa and IFTTT, 1/4 Mile Range, Instant Remote App, Text(Limited) and Email Alert - - Amazon.com
Amazon.com: Philips Hue Indoor Motion Sensor for Smart Lights (Requires Hue Hub, Installation-Free, Smart Home, Exclusively for Philips Hue Smart Bulbs)
3 Aqara Door and Window Sensor Plus 3 Temperature and Humidity Sensor3, REQUIRE AQARA HUB, Zigbee Connection - - Amazon.com
Amazon.com : tolviviov Motion Sensor - Compatible with tolviviov Home Alarm System-HUB Needed : Electronics
