450 · Chamberlain

For 450 · Chamberlain, opener brand is Chamberlain; opener model is 450; protocol or era is 8 or 9 Dip Switch 1984-1989; visor remote is 750CB; mini or keychain remote is 756CB, recorded from its source on 2026-08-31; source re-checked 2026-09-16.

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

450 | <https://dooropenersandmore.com/?s=750CB&post_type=product&type_aws=true> 750CB | <https://dooropenersandmore.com/product/chamberlain-750cb-compatible-390-mhz-single-button-mini-garage-door-opener-remote/> 756CB | <https://dooropenersandmore.com/product/chamberlain-klik2u-clicker-compatible-wireless-universal-keypad/> KLIK2U | 8 or 9 Dip Switch 1984-1989

— dooropenersandmore.com, retrieved 2026-08-31

Where each value comes from

The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.

— all from dooropenersandmore.com, retrieved 2026-08-31

Source

• dooropenersandmore.comhttps://dooropenersandmore.com/compatibility-charts/chamberlain-compatibility-chart/

Last verified against source: 2026-09-16. Due for re-check by 2027-08-31. This page as Markdown · OKF bundle · full dataset as JSON.