500 Series – TunnelTech 501

The TunnelTech 501 CO sensor, is an essential part of any road or rail tunnel safety system. Firstly, it monitors the atmosphere within the tunnel and ensures that the tunnel ventilation system provides sufficient clean air to protect tunnel users health.
Carbon monoxide (CO) is a colourless, odourless toxic gas produced by incomplete combustion of vehicle fuels. Carbon monoxide is dangerous because it inhibits the blood’s ability to carry oxygen to vital organs such as the heart and brain.