Honeywell FS-IOBUS-CPX12 is a communication module that connects various Honeywell controllers and sensors to a central processing unit (CPU) in building automation systems. It uses the Fieldbus Standard Input/Output (FS-IOBUS) protocol, which is a Honeywell-specific communication protocol for industrial automation applications.

Here are some of the technical specifications of the Honeywell FS-IOBUS-CPX12:

• Module type: Communication module
• Protocol: FS-IOBUS
• Number of channels: 12
• Channel type: Universal (analog, digital, pulse)
• Input voltage range: 0-10 VDC, ±5 VDC, 0-20 mA
• Output voltage range: 0-10 VDC, ±5 VDC
• Operating temperature: -40 to 85°C (-40 to 185°F)
• Dimensions: 4.33″ x 3.15″ x 1.22″ (110 mm x 80 mm x 31 mm)
• Weight: 0.5 lb (0.23 kg)

The FS-IOBUS-CPX12 is typically used in applications such as:

• Heating, ventilation, and air conditioning (HVAC) systems
• Lighting control systems
• Fire alarm systems
• Security systems
• Building management systems