D203B Dual Elements Passive Infrared PIR Sensor Used for Alarm System
Description:
D203B is a high-performance dual-element Passive Infrared (PIR) sensor designed for reliable motion detection in security, surveillance, and automation systems. Based on pyroelectric technology, this sensor is capable of detecting subtle infrared radiation changes emitted by the human body or other warm objects, making it a fundamental component in modern motion-activated alarm systems.
Features:
1. Dual-element pyroelectric sensor for enhanced stability
2. High sensitivity to human body infrared radiation
3. Low noise and high signal-to-noise ratio
4. Differential signal output to reduce environmental interference
5. Fast response time and long detection range
6. Compact TO-5 metal can package
7. Excellent immunity to electromagnetic interference (EMI)
Specifications:
| Sensor Type | Dual Element Pyroelectric Infrared Sensor |
| Model Number | D203B |
| Window Size | 4.0mm × 3.6mm |
| Spectral Response | 5μm to 14μm |
| Sensitivity | ≥ 3300 V/W |
| Noise (Output Voltage) | < 70 μV |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -40°C to +80°C |
| Dimensions | ~9mm diameter (body), ~5mm height |
| Storage Temperature | -40°C to +80°C |
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