<ul><li>Add the ability to monitor, open and close a second garage door opener with Smart Garage Control.</li><li>Smart Garage Control is limited to controlling two garage door openers.</li><li>Installation and Programming are easy: Mount to inside top panel of garage door and add to your existing myQ account through the myQ App.</li><li>Important: This product works with the new Smart Garage Control (MYQ-G0401,MYQ-G0401 - E and 821LMC), and Smart Garage mdoels (MYQ-G0201 & 821LM) and Smart Garage Hub (MYQ-G0301,MYQ-G0301-E,MYQ-G0301-D,MYQ-G0301C,MYQ-G0301LA,821LMB). Each sold separately.</li><li>The sensor provides low battery notifications through the myQ app.</li></ul><br><br>Add a second Door Sensor to control 2 garage door openers with you Chamberlain Smart Garage Control.

Chamberlain MYQ-G0402 Garage-Door-Sensors, White