G821LMB-2SENSOR LiftMaster myQ® Smart Garage Door Sensor
- Add a second opener to myQ Smart Garage Hub.
- Works with either 821LMB or 821LM.
This add-on door sensor works with your myQ® Smart Garage™ Hub or myQ Garage™ to monitor and control a second garage door opener.
Accessory Warranty: 1 Year
- Compatible with the myQ Smart Garage Hub (821LMB) and myQ Smart Garage Hub (821LM) – sold separately.
- Please note: This product replaces both 821LM-SENSOR and 821LMB-SENSOR and can be used as a replacement for either one.