Massa’s extremely user-friendly software works with a PC running under Windows® 95/ 98 /NT/2000 / XP operating systems. The M-5000/220 connects to a serial port of the PC using an RS-485/RS-232 converter. The RS-485 data link allows up to 32 M-5000/220 sensors to be on the same multi-drop communications network. For users that prefer not to use a PC, the sensors can be programmed at the factory to the customer’s exact specifications for true “plug and play” operation. Other features of the M-5000/220 include: industry standard 30 mm diameter CPVC housing, operation from -20°C to 65°C with built-in temperature compensation, diagnostic and monitoring outputs, and protection from over-voltage, short circuits, and reverse polarity