▁In ▁the ▁Bl und ell ▁collection ▁is ▁a ▁bas - rel ief ▁of ▁a ▁temple ▁with ▁double ▁doors , ▁each ▁leaf ▁with ▁five ▁pan els . ▁Among ▁existing ▁examples , ▁the ▁bronze ▁doors ▁in ▁the ▁church ▁of ▁SS . ▁Cos mas ▁and ▁Dam iano , ▁in ▁Rome , ▁are ▁important ▁examples ▁of ▁Roman ▁metal ▁work ▁of ▁the ▁best ▁period ; ▁they ▁are ▁in ▁two ▁leaves , ▁each ▁with ▁two ▁pan els , ▁and ▁are ▁fr amed ▁in ▁bronze . ▁Those ▁of ▁the ▁P ant he on ▁are ▁similar ▁in ▁design , ▁with ▁narrow ▁horizontal ▁pan els ▁in ▁addition , ▁at ▁the ▁top , ▁bottom ▁and ▁middle . ▁Two ▁other ▁bronze ▁doors ▁of ▁the ▁Roman ▁period ▁are ▁in ▁the ▁Later an ▁Bas il ica . ▁ ▁The ▁Greek ▁scholar ▁Her on ▁of ▁Alexand ria ▁created ▁the ▁earliest ▁known ▁automatic ▁door ▁in ▁the ▁ 1 st ▁century ▁AD ▁during ▁the ▁era ▁of ▁Roman ▁Egypt . ▁The ▁first ▁foot - s ensor - activ ated ▁automatic ▁door ▁was ▁made ▁in ▁China ▁during ▁the ▁reign ▁of ▁Emperor ▁Yang ▁of ▁S ui ▁( r . ▁ 6 0 4 – 6 1 8 ), ▁who ▁had ▁one ▁installed ▁for ▁his ▁royal ▁library . ▁The ▁first ▁automatic ▁gate ▁operators ▁were ▁later ▁created ▁in ▁ 1 2 0 6 ▁by ▁Arab ▁invent or ▁Al - J az ari . ▁ ▁Co pper ▁and ▁its ▁allo ys ▁were ▁integral ▁in ▁medieval ▁architecture . ▁The ▁doors ▁of ▁the ▁church ▁of ▁the ▁N ativity ▁at ▁Beth le hem ▁( 6 th ▁century )