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
chamberlain_850cb_om.pdf

(0.09 MB in English) This requires Acrobat 10 or higher