The D204S is aPIR sensor which integrates digital control circuit and body sensitive element in one electromagnetic shielding. The signal inputs from sensitive element to digital circuit via a high impedance differential. The digital circuit converts the input signal to 15bit ADC digital value. When the PIR signal above the selected threshold, there will be a REL output. The parameter of time are set by resistance to control the time delay of application continuous work. All signals are processed digitally.
Features

Digital Signal Processing

Schmidt REL output

Differential inputs

Second order Butterworth low-pass filter, removing other higher frequency interference

High supply rejection, High immunity to RFI

Output time adjustable, Schmitt REL output for sensitivity

Lowsupply voltage, Low current consumption

Resources
Datasheet