BACnet Snow / Ice Sensor Interface MS/TP The BACnet Snow/Ice Sensor Interface 681 is designed to measure the presence of snow/ice and interfaces with the Building Automation System (BAS) to operate electric or hydronic snow melting systems. The 681 uses tekmar® sensor technology to automatically detect snow or ice, and upon detection communicates with the BAS through BACnet MS/TP. This operation allows the BAS to automatically turn on/off and provide operational status for a snow melting system. The 681 is suitable for any snow melting commercial application including, hospitals, schools, airports, ski resorts, business entrances, driveways, loading docks, and shopping malls. Features Slab target temperature Automatic snow / ice detection Supports both in-slab and retrofit aerial sensors Supports both DIN rail and backplate mount Error codes Warm weather shut down Melt pending Cold weather cut off BACnet MSTP communication Agency Approvals FCC Part 15, BTL Listed Ambient Conditions Minus 4 to 122 degrees F (-20 to 50 degree C), less than 90 percent RH non-condensing, outdoor use permitted when used in NEMA 3 enclosure Communications Type BACnet MSTP Control Type Microprocessor control, this is not a safety (limit) control Dimensions 6.34" (161mm) H x 5.13" (130mm) W x 1.30" (33mm) D Display 3.5" color touchscreen Enclosure Material PC+ABS plastic Enclosure NEMA Rating NEMA 1 Power Supply 24 V (ac), 50 and 60 Hz Resources Datasheet Installation Instructions More Info
