As an Amazon Associate, we earn from qualifying purchases. NetPromax . RS485 NetPromax . RS485 Attributes Brand name, Manufacturer name, ManufacturerNetPromax CategoryL1Video Security (CCTV) CategoryL2Control Equipment moq, multiple, tierMinQty11 MPNRS485 qtyInStock-2 qtySourceDefault field SKU652397 tierPrice1150.01 Distributor offers SellerSKUMOQIn stockMultiplePrices amerisponse.com6523971-211 @ $150.01