This product has been discontinued.
The HCS-II Supervisory Controller has 16 digital inputs and 8 digital outputs built in. However, sometimes it is necessary to add even more digital I/O to your Home Automation System. The BUF-IO simply plugs onto the Supervisory Controller’s expansion headers and adds 24 ±30VDC buffered inputs and 24 high voltage open-collector driver outputs which can handle up to 50VDC loads @ 500mA.
Each set of eight inputs or outputs are accessed via 20 pin headers. These headers also supply a 5VDC reference for use with pull-up resistors if necessary. The high voltage/high current outputs are ideal for driving relays. You can also interface BUF-IO boards to industry standard I/O modules boards which offer opto-isolated industrial control capability for 120VAC at currents up to 3A.
HCS-II users can add up to 2 BUFIO boards to their supervisory controller, allowing for a total of 64 direct inputs and 56 direct outputs (includes SC I/O). This does not include the I/O you can add with network modules. BUFIO and SC based inputs are ideal for getting instant response to changing inputs.
BUFIO Specifications
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Interface/Connection
- Plugs on top of the Supervisory Controller
- 6 2×10 headers for I/O connections (connectors included)
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Input/Output
- Digital Inputs: 24 bits, ±30VDC buffers
- Digital Outputs: 24 bits
- 500mA @ 50V with 20% duty cycle
- 175mA @ 50V with 100% duty cycle
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Physical
- Size: 3.5" x 3.75"
- Power: +5VDC @ 100mA (no active I/O)
- Temperature: 0-70°C, 10-90% humidity

