The present invention is a detection device, system and method for detecting an external electromagnetic event such as lightning or a high intensity radiated field. In one example, a target volume amount of water and an operational time period is provided, and the operational time period is altered based upon a volume of water moved. The k input ports of an N\xd7M wavelength selective switch and the add controller are connected by k links which have introduced therein dispersion compensators for compensating chromatic dispersions of the add optical signals with the respective bit rates. The plurality of digital data latch circuits has a first N-channel Tr and a second N-channel Tr of which the sources or the drains are connected in series, a P-channel Tr, and a data holding circuit. After transmitting the predetermined number of neighbor discovery messages, the node transmits neighbor discovery messages that omit the identity of the neighbor node until another neighbor discovery message is received from the neighbor node that indicates a change in a communications state associated with the neighbor node.