Digital tube display: display the current gas concentration. Normal indicator light: the devices work fine,the connection to the detector is fine. Failure indicator light: the channel data is wrong and the channel data is not in the normal range. High alarm and low alarm indicator light: when the gas concentration exceeds the alarm setting point, light up the indicator light and close the corresponding relay.
Digital tube display: display the current gas concentration. Normal indicator light: the devices work fine,the connection to the detector is fine. Failure indicator light: the channel data is wrong and the channel data is not in the normal range. High alarm and low alarm indicator light: when the gas concentration exceeds the alarm setting point, light up the indicator light and close the corresponding relay.
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