Professional LED clock with tri-color display, robust and stylish combining the best of the technology for an easy installation and operation.Time setting The professional LEDI® clocks can display the same time information, synchronized by a master clock or a time server. Display date and time alternately. Internal time base The LEDI® clock has its own temperature compensated TCXO time base which allows an accuracy about 0.1 sec / day between 0° to 40°C in case of synchronization loss. Security Backup of time information in case of mains absence, by lithium battery : 10 years. Time setting The professional LEDI® clocks can display the same time information, synchronized by a master clock or a time server. Display date and time alternately. Internal time base The LEDI® clock has its own temperature compensated TCXO time base which allows an accuracy about 0.1 sec / day between 0° to 40°C in case of synchronization loss. Security Backup of time information in case of mains absence, by lithium battery : 10 years. Key features Perfectly silent, direct and accurate reading of time. SMD bi-colour LED technology allows to change the display colour in red, green or yellow. A protection against over-voltage and industrial interference via EMC filter. An easy "plug and play" installation. An anodized aluminium case wall mount (screw lock) or bracket mount. Makrolon 3 mm anti reflection on front side. Its participation in the sustainable development life span over 20 years. 2 years warranty