The Linear DT-4B 4-button remote transmitter can activate four DR Linear Delta 3 radio receivers, two 2-channel Linear DR2 receivers or one 4-channel DR4 receiver. There are 8 DIP switches in the Linear DT-4B remote that are matched to the DIP switches in the Delta 3 radio receiver. If the switches are set the same in the remote and radio receiver then the remote is able to activate the receiver which tells the garage door opener to open or close the garage door.
Compatible with Linear Delta-3 radio equipment. Compatible with Linear remote models: DT-1, DTC, DTA, DT-2D, DNT00002A, Mini-T Keychain
Compatible Linear Delta-3 radio receivers: DR, DR3A, DR-2, DR-4, DRA, DRA-4, DRM, DRQP, GRD, GRD-2
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