LINEAR model MDTK keyless entry. It transmits using rolling code on frequency 310.
The warranty on the MDTK garage door keyless entry is 1 year from LINEAR.
The model MDTK is still available.
LINEAR model keyless entry instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
(0.79 MB in English) This requires Acrobat 10 or higher