Some more high-tech helmets can also include intercom systems and cameras, but these are still usually too delicate to survive the harsh environments of underground workspaces, but the capability is there.
The house contains nine bathrooms, a complete sound system hooked up to an in-house studio, and an intercom system that allows for communication between family members at opposite ends of the home.
Because movement during the scan can cause inaccurate images, the technologist instructs the patient via an intercom system to hold their breath and not move during the x rays.
An intercom system was installed so the family can communicate with each other.
A technologist operates the MRI scanner from an adjacent control room that contains a computer system and an intercom system for communicating with the patient during the scan.
The technologist uses an intercom system to instruct the child to hold their breath or remain still at certain times during the scan.
There was indoor plumbing, including tubs with running hot water, a boiler room in the basement and even an intercom system.
Jimmy's scratchy voice came across the intercom.
The only difference was the electricity powering lights in the heavy iron and wood chandeliers overhead and the intercom system installed into the walls beside each entrance.
"Please have a seat, Ms. Young," an irritated voice announced over the intercom.