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OC-4000 Gas detection controller

2018-6-12      View:
OC-4000 gas detection controller with different channels for choice: 2 channels, 4 channels and 8 channels,  it composed of the metal shell, Power key, main board, interface board, alarm, etc.
The display screen is the 0.8 inch Nixie tube, for displaying each gas concentration, also with the indicate light for the each channel. When press the key, if press less than 20ms, the key signal will be invalid, when the time between the 20ms~3s, the key signal is normal. If more than 3s, the key signal will be long-press.