HDL-MPB03.48 iElegance Series 3S Smart Door Bell iElegance Series 3S Smart Door Bell, Brushed Bronze finished plate with engrave letters,rounded corners, for intelligent control Parameters Model HDL-MPB03.48 SKU 421201 Bus Power 25 mA Width 63 mm Height 63 mm Depth 46 mm Weight 91 g Material CustomOne CustomTwo CustomThree CustomFour CustomFive Discount category A 3 pcs in stock in stock in stock You can buy these goods through registered HDL partner. Question to product