8165W Contractor Series - 1/2 HP AC Chain Drive Garage Door Opener Wi-Fi w/o Rail

LiftMaster 8165W MyQ 1/2 HP Chain Drive Garage Opener Chain Rail NOT Included. Easily connect to a home network with built-in Wi-Fi. Open, close and receive alerts about garage doors on a smartphone. Syncs with popular smart devices and platforms. Support standard doors day after day with the 1/2 HP AC motor. Consume up to 75% less power in standby mode. Count on long-term reliability with the durable chain drive system. Confidently know that every click sends a secure code to the garage door opener. Protect people and vehicles with safety sensors that stop the door from closing on obstructions.