Series 540 backup panel is designed to provide uninterrupted reserve supply of gas for nitrogen, air, or hydrogen generators used in production environments. Activated at user-determined pressure, panel offers adjustable pressure range of 0-150 psig, max inlet pressure of 3,000 psig, and operating temperature range of -40 to 140°F. Gauges are 2 in. dia brass or Type 316L SS, and remote alarm package signals when reserve supply is active or running low.