The upper part of the combo unit is an easily openable window with knob handle. The window conceal the piping, valves and gas outlets inside the box and labeled “Caution - Medical Gas Shut-Off Valves - Close Only in Emergency”. The lower part is an alarm system, which is a highly modular system utilizing the most advanced technologies in electronics and software.
Clear viewing space shall be provided in the window to display the gas service, the area controlled by the valve, and the pressure gauges.