As you’re doing your annual home spring cleaning, it’s also a great time to check your smoke alarms, carbon monoxide detectors and of course the battery back-up in your Armstrong Telephone adapter (MTA). At the time of your install, Armstrong provided a back-up battery estimated to last up to 8 hours, however, batteries can degrade over time.
If you would like to purchase replacement or additional back-up batteries rated to last up to 24 hours visit https://shop.surfboard.com.