CHAMBERLAIN model 940D keyless entry. It transmits using rolling code on frequency 315.

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

The model 940D is discontinued.

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

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