HM-PF-RS232-010001. Interface for communication with HART field devices. HART compliant for communication with any HART field device and error-free slave testing. Easy installation. Draws power from RS-232 port, needs no external supply to power modem. Compact, rugged polycarbonate housing for industrial-grade reliability. Polarity insensitive test clips. Transformer isolation allows you to connect the interface across the load resistor or the field device. Compatible with 32- and 64-bit Windows?? XP, Vista, 7 and 10. Alarm limits configurable via DIP switches. Fault indication transmission by voltage free contact. Permanently self-monitoring