The SSL1D03BD is a digital pressure switch from the Tesys D Line range. It is used for monitoring differential pressures in pipes, tanks and other systems. It uses a contact output and can operate with both AC and DC power. The switch has adjustable differential pressure and preset switching points. It has 3 contacts with a breaking capacity of 4A at 230V and NC/NO contact configuration. It also features Type SPR integrated protection and LED indicator.