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Status output relay – Ocean Optics USB-TC User Manual

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USB-TC Instructions

172-00000-100-01-201210

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2. Connect the other end of the wires to a 12 VDC power source, being careful to maintain

correct polarity.

Status Output Relay

An isolated dry-contact relay inside the USB-TC is provided to indicate when the unit has reached the
setpoint temperature. Connect two wires to Pins 3 and 4 as shown below to use this feature. Circuit
continuity (contacts closed) indicates stable temperature.