Warning
• Be especially careful regarding the polarity of the trouble alarm (TA: plus, TC:
minus.) as the circuit protection diodes are internalized, if the polarity is reversed,
the trouble warning signal will not be output.
• To avoid electric shock, always disconnect the power supply before performing
any wiring operations.
• Ensure that the unit is properly grounded.
Caution
• Do not lay cables near sources of electrical noise, such as high-capacity
transformers, motors or power supplies.
• Ensure that the cables on the external device side and the gas detector side are
correctly connected.
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