The Linear model DR radio receiver has been used (and is still being used) as an external radio receiver on many brands of garage door operators. From the 1970's into the 1990's there were many different brands of garage door openers that would use external radio receivers (instead of today's openers that have the radio receivers built into them). One of the top receivers that was used in the Linear Delta-3 single channel digital radio receiver found here.
You may find these receivers on older Genie, Stanley, Raynor, Overhead, Chamberlain, Liftmaster, Allister or other makes. Most operators will have a 24v power hookup directly on the operator so the radio receiver can be powered but if it doesn't then you'd need to use a transformer to power the receiver.
The DR Linear Delta-3 radio receiver was used on many of the older Raynor garage door openers such as the R170/270, R160/260, R150/250, and R130, and is also compatible with the cost effective Digi-Code DC-DT1 1-Button Remote and Dolphin DOLGDO300310 Wireless Keyless Entry.
Learn how to install and program the Linear DR radio receiver by watching a short video here
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