The infrared imaging sensor brick is designed to be part of a Modular, Multi-purpose, Multi-sensor (MODSEN) Robot. This robot has been designed with the primary focus being set on its modularity. The modular nature of the robot demanded that each part be a self sufficient plug and play device. This is what gave rise to the idea of a sensor brick. The robot has different sensors on it for both sensing and motion control. The infrared imager has a sensor brick, which consists of an acquisition (sensor) block to capture images, a preprocessing block to work on acquired images, a power system block to maintain power supply to the whole brick, and a communication block for transferring data between the sensor brick and the host computer, which is located on the robot or somewhere remotely. Since the infrared sensor brick is designed to be a self-sufficient system, it can be removed from the robot and attached to it at any desired time without affecting the main setup of the robot. The sensor brick can exist as a stand alone system to capture infrared data and transmit it for useful purposes. The infrared sensor allows the brick to be functional even in the absence of light. The sensor brick has a modular design in which all of its parts can be easily replaced without inflicting major changes in its structure. This brick has several potential applications on different robotic systems such as those meant for motion detection, face recognition, pattern recognition, intrusion detection, search and surveillance, under vehicle inspection, and heat sensing.