eufy Security
eufy Security Entry Sensor, Detect Open and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-Use, Requires HomeBase
THIRDREALITY
THIRDREALITY Zigbee Vibration Sensor with 110dB Alarm, Zigbee Hub Required,Adjustable Sensitivity, Work with SmartThings, Home Assistant via ZHA/Z2M and Echo Devices with Built-in Zigbee hub
YoLink
Yolink Smart Wireless Door Sensor, APP Alerts Smart Door Window Sensor Smart Home Security System, 3 Packs
Aqara
Aqara Water Leak Sensor Kit - 3 Pack, Requires AQARA HUB, Wireless Water Leak Detector, Wireless Mini Flood Detector for Alarm System and Smart Home Automation, for Kitchen Bathroom, Works with IFTTT
Aqara
Aqara Door and Window Sensor Kit - 3 Pack, Requires AQARA HUB, Zigbee Connection, Wireless Mini Contact Sensor for Smart Home Automation, Compatible with Apple HomeKit, Alexa, Works with IFTTT
Philips Hue
Philips Hue Outdoor Motion Sensor for Smart Lights (Requires Hue Hub) Installation-Free, Smart Home, Smart Lighting, Exclusively for Philips Hue Smart Bulbs, Black (570985)
BITIWEND
Door Chime for Business When Entering - BITIWEND Wireless Doorbell Chime - Door Alarm Sensor with 600 FT Range 58 Chimes 5 Volume Levels LED Indicator (1 Plug-in Receiver & 3 Door Sensor)
ecobee
20%OFF
ecobee Smart Sensor for Doors & Windows 2 Pack - Wifi Contact Sensor for Home Security, Energy Savings - Compatible with ecobee Smart Thermostats - Temperature sensor
YoLink
YOLINK LoRa Smart Outdoor Contact Sensor, Gate & Shed Door Sensor, Universal Contact-Closure Sensor, Email/SMS/Push Alerts, 1/4 Mile Range, Alexa, IFTTT, Home Assistant (Hub Required)