HAMMOND MANUFACTURING 1551 miniature plastic enclosure family consists of 49 different sizes; in this latest extension to the range a further 10 variants have been introduced. A choice of colours, flanged lids, keyring and USB C versions are also available. The 1551V ventilated sensor enclosure versions are now available in 45, 60 and 80mm diameter round versions, available with plain or vented covers. Unventilated cover versions are also available of the 80 x 80, 60 x 60, 40 x 40mm and 80 x 40mm square and rectangular enclosures. Product’s snap-fit closure allows repeated opening and closing without tools and also maximises the internal space for pcbs by eliminating screw fixings to secure the cover to the base. The internal real estate available for pcb mounting is 74 x 74, 54 x 54, 34 x 34 and 74 x 34mm in the rectangular units and 39, 54 and 73.50mm in the circular ones. All options are available in black, grey and white UL94-HB ABS as standard. All bases feature 4mm high pcb stand-offs, wall mounting slots and a 15mm cable knock out. All sizes are 20mm high, which gives enough space for board-mounted RJ45, USB and other standard communication interfaces.