CHAMBERLAIN model 940CB keyless entry. It transmits using rolling code on frequency 390.

The warranty on the 940CB garage door keyless entry is 1 year from CHAMBERLAIN.

The model 940CB is discontinued.

CHAMBERLAIN model keyless entry instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
chamberlain_940cb_om.pdf

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