Smart IR temperature sensors integrate sensors and circuits to process environmental information without human interference. The new smart sensors are the smallest available, allowing remote control and monitoring from a computer. They work by measuring infrared radiation between 0.7-14 microns, which corresponds to object temperatures. Digital electronics and software provide fast response, remote setup and calibration, and additional functionality. As an example, a smart IR sensor can control a space heater based on the actual temperature of the area being heated rather than just the heater itself, improving safety and efficiency.