Buy Window/Door Guard!!! Low Voltage Alert Z Wave Door Sensor With 433/315MHZ with Cheap Wholesale Price from Trusted Manufacturers, Suppliers, Exporters and Wholesalers Company "Shenzhen Eray Electronic Co., Ltd." located in China (Mainland). Minimum order requirement for this product is only 50 Pieces. This Window/Door Guard!!! Low Voltage Alert Z Wave Door Sensor With 433/315MHZ product have been inspected by our experienced Quality Controller officers on the largest B2B marketplace in China, Alibaba. We guarantee that this product will meet your satisfaction.