The cat sensor does the work for you and keeps your cat safe. 1  With the Litter-Robot, maintenance is easy and infrequent. We recommend emptying the waste drawer once every 7-10 days for a single cat household, and more often if you have multiple cats.
It's simple. Radio waves travel unbelievably fastâat the speed of light (300,000 km or 186,000 miles per second). Analog radio. Ocean waves carry energy by making the water move up and down. In much the same way, radio waves carry energy as an invisible, up-and-down movement of electricity and magnetism.
Radio signals that carry the data travel at the speed of light which is about 300,000 kilometers per second. At this speed, the signals can reach Earth in as little as 4 minutes (78 million km), or can take as long as 21 minutes (377 million km). Engineers refer to this length of time as the one-way light time..