Working principles determine fundamental characteristics. Temperature sensors are like chefs of different styles: thermoelectric idols are like stir-fry chefs, generating electrical signals through metal temperature differences; resistance temperature detectors (RTDs) are like slow-cooking chefs, relying on changes in material resistance; infrared sensors are like delivery riders, remotely capturing heat radiation. This fundamental difference results in inherently different measurement ranges (-200℃ to 2000℃), response speeds (milliseconds to minutes), and accuracy (±0.1℃ to ±5℃), just as a wok cannot be used directly as a clay pot.
Application scenarios draw a dividing line. Car engines require armored thermocouples that can withstand temperatures up to 130℃, while smart bracelets only need NTC thermistors operating at -10℃ to 50℃. The medical field requires platinum resistance thermometers with ±0.1℃ accuracy, while semiconductor sensors with ±1℃ accuracy are sufficient for agricultural greenhouses. Just as hiking boots and slippers each have their own niche, using industrial-grade sensors in consumer electronics would be a waste of resources.
The Technical Secrets Behind Compatibility: Signal output method (analog/digital), power supply voltage (3V/5V/24V), and interface protocol (I2C/SPI) constitute the three major compatibility hurdles. A certain brand of temperature controller may only recognize 0-5V analog signals, while digital sensors output Modbus protocol data. In this case, a signal conversion module is needed to act as a translator. Just like the competition between Type-C and Lightning interfaces, the degree of standardization determines the possibility of universality.