GUARDIAN model GDOWLESKEY keyless entry. It transmits using billion code on frequency 300.
The warranty on the GDOWLESKEY garage door keyless entry is 1 year from GUARDIAN.
The model GDOWLESKEY is still available.
GUARDIAN model keyless entry instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
guardian_gdowleskey_keyless_entry_om.pdf
(0.32 MB in English) This requires Acrobat 10 or higher