The D203Bpyroelectric infrared sensor detects infrared radiation on the basis of the characteristics that the polarization of pyroelectric material changes with temperature. Dual compensated sensing elements are applied to suppress the interference resulting from temperature variation with the EMI components. As a result, the operating stability of the sensor is greatly improved.
Features

The junction field effect transistor realizes impedance transformation in the form of source follower
The dual-element compensation structure is adopted to effectively resist the interference of environmental changes, vibration and stray light
Suitable for automatic lighting switches, smart toys, intrusion detectors for burglar alarms, various household appliances, etc

Resources
Datasheet