The Pegasus LO-N2 (TM) Nitrogen Low Pressure Alarm is a general purpose 0-4000 PSI gauge suitable for Nitrogen. The gauge will alarm when the pressure falls below 500-PSI (+/- 150 psi), both visually and audibly. The gauge connection is a 1/4-inch NPT thread and gauge is battery operated.
Simply remove gauge from manifold regulator and install the LO-N2 in its place. On/Off button and Push to Test button are located on the back of gauge. Made in the U.S.A.