Check the listing for details. Mega Code / Linear Delta-3 (DRA/DNR00001) 24v Radio Receiver for Linear Openers. Condition: New. Listed at 31.25 USD. Mega Code / Linear Delta-3 (DRA/DNR00001) 24v Radio Receiver for Linear Openers Mega Code / Linear Delta-3 (DRA/DNR00001) 24v Radio Receiver for Linear OpenersActivates one door opener or gate openerWire lead antennaMounting bracket suppliedOptional mounting tabs suppliedOne-Year manufacturers warrantyPower: 24 volts AC/DC Frequency: 310 MHzCodes: 256 (set by 8 dip switches)Dimensions: 5.5 x 4.0 x 1.25 inches The Linear Delta-3 model DR also known as the DR3A is a standard one channel, 24-volt, three terminal, wire lead antenna gate or garage door opener radio receiver part number DNR00001. This radio receiver works with all the Linear Delta-3 or Moore-O-Matic 8 DIP (on/off) code switch remotes on the 310MHz frequency. With the industry standard 3 terminal screw connector, it can connect directly to most older garage door openers or gate openers that use the standard 24 volt, 3 terminal connection using the adapter tabs included, or it can be powered by the optional Linear TF524 plug-in ac power adapter (sold separately). Controls one gate or garage door opener. The Linear Delta 3 radio controls are now only available on the 310MHz frequency and all other frequencies have been discontinued. This item is new in box and includes 3 optional mounting connection tabs, mounting bracket and installation/programming instructions. This receiver is also available in a 12 volt version model DRA part number DNR00012 The Linear DR receiver is directly compatible with the following models 310MHz:Linear Delta-3: DT, DTA, DTC, LB-B, Mini-T, Ladybug, DT2A, DT3+1, DT4A.Not all compatible models may be listed. Payments & Returns Policy