Best Garage Door Left Open Sensor

Door Alarm Sensor, 4 Pack SECRUI Wireless Window Door Open Contact Burglar Alarm Chime Anti-Theft 4 Modes 120dB Loud Enough Sticky pad Easy to Install for Your home Kids Safety Shop Security

Meross Smart Garage Door Opener, Voice/Remote Control, Compatible with Apple HomeKit Amazon Alexa Google Home SmartThings, Auto Close, with Timer, Add-On to Existing Garage Opener, 2.4GHz WiFi Only

TECKNET Door Alarm Sensor, Window Alarm Sensors, 2-in-1 Alarm & Chime, 3-level Volume Control, Door Sensor Alarm for Home Security, Wireless Burglar Alarms for House, Shop, Office, Garage (6 PCS)

Hive Window or Door Sensor - White, Pack of 1

Chamberlain ML700EVGB Comfort Garage Door Opener, White, 700N toothed belt drive - Up-and-over door, sectional door or overhead door incl. 2 remote controls

Panamalar Door Window Sensor Wifi Door Alarm System, Detects Opened and Closed Front Back Garage Door, Sends Alerts, Alexa Google Home Compatible, Smart Auto Switch on Lights Accessory

CO-Z RA1401 Automatic Sliding Gate Opener Kit, 280W Electric Gate Opener for Doors up to 600kg 12m, Rack Driven Driveway Garage Garden Gate Hardware Kit w Remote Controls Infrared Sensors Gear Racks

eufy Security, Entry Sensor, Detects Opened and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-use Only, Requires HomeBase or HomeBase E

NineLeaf Outdoor Motion Detectors, Outdoor Motion Sensor Alarm, Dog Cat Doorbell, IP64 Waterproof Store Welcome Door Bell Chime, Radar Infrared Driveway Alarm for Shop Store Office Home Mailbox Garage

Eve Door and Window (Apple Home) – Smart Contact Sensor for Doors and Windows, Notifications (Open/Closed State), Automatic Control of Accessories and Scenes, No Bridge, Bluetooth/Thread