... 4.80-90DB, strobe light 5. high quality JINHUA LUCKARM ELECTRIC CO.,LTDModel: Wireless doorbell for apartments, hotel doorbell speaker D3971 Features ... CBM6012.0011.003000460CELUCKARM is hereBest regards,Mike Zhang Jinhua Luckarm Electric Co., Ltd.Add: Caozhai Industrial Area Jinhua City,Zhejiang, China 322200Tel: 86 ...