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CHAMBERLAIN model 940EV keyless entry. It transmits using billion code on frequency 315.

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

The model 940EV is still available.

CHAMBERLAIN model keyless entry instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
chamberlain_940ev_om.pdf

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