Optimized for use in harsh industrial environments, the 1554 flat-lid and 1555 styled-lid ranges of ABS and UV-stabilized polycarbonate enclosures provide IP66 sealing and good mechanical protection. The light-grey RAL 7035 enclosures are designed to house printed circuit boards or DIN rail-mounted components. IP66 sealing is achieved through a one-piece silicone gasket in a tongue and groove seal. The styled lids include a recess suitable for mounting a membrane keyboard and also are fitted with PCB mounting bosses. Bases are fitted with internal DIN rail mounting tabs in all but two sizes and standoffs for mounting PCBs or optional internal panels are provided in all versions.