... postal officees,monitoring,restaurants,entertainment,enterprises etc... Our led digital clock take the technology of PoE and no ac power ... -strength black plasticWeight0.9kgWeight1.5kgPackage information: 4 digits led digital clockCarton dimension: 66*39*38cm 20pcs/carton NW 14KG ... , and we have a large scope of product line, such as NTP Time Servers, NTP led digital clocks , analog clocks, temperature ...