10:13Source SDK Tutorial 05 - Creating A Door That Opens With A Button & Triggersteajunk1e891 viewsView & Download
5:52[Source SDK/Hammer Editor] Doors w/ Buttons - Source SDK Tutorial //by The JX86TheJX86188 viewsView & Download
7:10Source SDK - keypad v2 Part 1 of 2 + video with extra configsDevelopment TOHRU948 viewsView & Download