A device for contactless cargo load control for shipping container crane installations, by x-raying the containers in the course of loading and unloading of transport vehicles. Information that includes data indicative of user interaction with a client device may be received. The body defines a number of ignition passages, each communicating from a respective flash charge chamber to the delay chamber. The second silicon substrate of the second wafer is used as a handle and then removed from the silicon oxide layer of the second wafer after bonding the first and second wafers together. This provides a semi-transmission type liquid crystal display which has an excellent visibility in reflection mode as well as in transmission mode.