LINEAR model MDRU receiver. It receives using on frequency 310 MHz.
The warranty on the MDRU garage door receiver is 1 year from LINEAR.
The model is still available.
LINEAR model MDRU receiver instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
linear_mdru_om.pdf
(0.18 MB in English) This requires Acrobat 10 or higher