Neither will intruders, thanks to the Posi-lock anti-theft protection. Chamberlain B970 delivers the highest force of lifting. The B750 has a smaller motor power 0.75hp compared to 1.25hp, although both door openers have the same lift capacity. Chamberlain B970 $ 270.00 – $ 420.00. Chamberlain garage door openers with yellow or blue force adjustment dials flash the LED next to the Learn button to indicate a component failure. In this guide, we’ll give you the step-by-step guide to Chamberlain garage door opener troubleshooting. The Chamberlain B750 and B970 are much more similar in terms of specifications. 1-1/4 HP Ultra-Quiet Belt Drive Smart Garage Door Opener with Battery Backup. Even though the 1.25 h.p. There are safety sensors that reverse the door when there is crossing of objects on the beam or contact to a person or an object. Some other popular brands under the Chamberlain Group is Liftmaster and myQ. The automatic lights feature simply switched the light on when entering the garage. 5. So keep reading. Powered by Chamberlain’s Max Lift Power System, the B970 delivers lifting force equivalent to 1 1/4 HP, the highest lifting capacity in the category for superior performance in extreme conditions Superior range - Includes 2 3-button remote controls that let you control up to 3 openers. The posilock anti-theft protection on the chamberlain B970 ensures the door remains locked once it is closed. strength of the B970 is enough to lift any door, this opener may not be the best choice for extremely heavy doors that have a hard take off from the ground. The Chamberlain C870 is the chain drive version of the B970, and is a little bit less expensive, too. High performance. For your safety, the Chamberlain B970 and the Chamberlain B980 come with safety sensors to detect obstructions and motion detectors that will automatically turn lights on. 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