Patlite’s new NHL intelligent signal tower with network monitoring function allows economical control of the functions of up to 24 network components for each signal tower. Used as a PING device monitor it detects whether all network components are connected with the network by initiating PING interactions for up to 24 devices to alert the administrator with a light/sound signal in case a PING response fails. The tower also sends a light/sound signal for SNMP TRAP messages generated by routers, printers or switches in case of an error. In addition, the signal tower can also be used to monitor important background applications and can send an e-mail message with up to eight events. The title and text of the e-mail can be programmed in advance based on the event. The NHL is controlled by RSH commands in combination with standard management software. To set up the signal tower, all that is needed is the IP address and a web browser. Integrated fi rmware is updated using the web browser.