Unattended ground sensor

Unattended ground sensors are like tiny watchful robots that stay in one spot and watch for anything that moves. They have sensors inside them that help them to spot changes in the environment around them. For example, they can be used to keep an eye out for animals or people in an area. They are usually put into areas where it is difficult for humans to monitor, like in a forest or a desert. The sensors can detect movement and then send a signal to someone who can take action if needed.