Sylcom PRO Call for a quote. Quantity discounts available QuantityPrice SKU: 549817245 This item is IN STOCKCurrent Stock: 1 Details • PRO version allows to connect up to 15 instruments by USB cable, up to 40 instruments by Bluetooth® and up to 128 instruments by M-BUS modules (tota... Details Back Details• PRO version allows to connect up to 15 instruments by USB cable, up to 40 instruments by Bluetooth® and up to 128 instruments by M-BUS modules (total maximum 128 connected instruments).