CHAMBERLAIN model 850CB transmitter. It transmits using on frequency 390 MHz. It has 1 button(s).
The warranty on the 850CB garage door transmitter is 1 year from CHAMBERLAIN.
The model 850CB is still available.
CHAMBERLAIN model transmitter instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
(0.09 MB in English) This requires Acrobat 10 or higher