This is a very small light sensor. A photo resistor (also known as a photodector, or photocell) changes resistance depending on the amount of light it is exposed to.
The H8054 PIR motion detection module provides basic motion detection in a small package. Compatible with the Arduino and Raspberry Pi
The HC-SR501 is a passive infro-red (PIR) sensor which is used to detect motion based on the infrared heat in the surrounding area.
This is our LT2-F NIST qualified security robot with an enclosed robot chassis with rear flippers/stabilizers, camera tilt system, custom controller, video console, and battery charging station.
This robot has a pivot center with custom length sides and 10 inch tires with IG52 136 RPM motors. We have included everything to make it ready to run including batteries, chargers, and a controller. Customized version of TP-046-000.