LIFTMASTER model STAR450-390 receiver. It receives using on frequency 390 MHz, Security plus (390 Mhz).
The warranty on the STAR450-390 garage door receiver is 1 year from LIFTMASTER.
The model is still available.
LIFTMASTER model STAR450-390 receiver instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
liftmaster_star450_390_om.pdf
(0.17 MB in English) This requires Acrobat 10 or higher