Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | D203S |
| Sensor Type | Pyroelectric Infrared (PIR) |
| Detection Angle | 140 degrees |
| Operating Voltage | DC 4.5V - 20V |
| Lens Color | Black |
| Output Signal | High/Low Level Trigger |
| Delay Time | Adjustable via potentiometer |
| Dimensions | 32mm x 24mm x 18mm |
| Mounting Type | PCB Screw Holes |
| Application | Automatic Lighting, Security Systems |
Anonymous
Mar 31, 2026
Rating: 4/5
Good sensitivity, easy to wire
Very responsive to motion. I had to tweak the delay potentiometer slightly to get the timing exactly how I wanted it, but once set, it has been reliable for weeks.
Anonymous
Mar 14, 2026
Rating: 4/5
Great value component
For the price, you can't beat the performance. The documentation could be slightly clearer on the pinout, but a quick search online solves that.
Anonymous
Mar 12, 2026
Rating: 5/5
Consistent performance
I have used various PIR sensors before, and this D203S model offers excellent consistency. The black lens seems to reduce interference from ambient light effectively.
Anonymous
Mar 08, 2026
Rating: 5/5
Reliable induction switch
Using this as a trigger for a camera system. It ignores small pets but picks up human movement accurately. No false alarms so far.
Anonymous
Mar 07, 2026
Rating: 5/5
Bulk buy for our workshop
We purchased ten of these for student projects. All units functioned correctly. The build quality feels solid and the pins are well-soldered.
Anonymous
Mar 02, 2026
Rating: 5/5
Perfect for my Arduino project
This D203S module worked flawlessly right out of the box. The detection range is impressive and the black lens blends well with my enclosure. Highly recommended for DIY automation.
Q: Does it support both high and low level triggering?
A: Yes, the module features a jumper cap that allows you to select between High-Level Trigger (H) and Low-Level Trigger (L) modes.
Q: Can this be powered by a 3.3V microcontroller?
A: The recommended operating voltage starts at 4.5V. While it might function at 3.3V, performance and detection range may be inconsistent. We suggest using a 5V supply for optimal results.
Q: Does this module come with the Fresnel lens attached?
A: Yes, the D203S module comes pre-assembled with the black Fresnel lens installed.
Q: What is the maximum current output of the sensor?
A: The output current is typically around 10mA, which is sufficient to drive an LED or a low-power relay directly, but we recommend using a transistor for higher load applications.
Q: Is the delay time adjustable?
A: Yes, there is an onboard potentiometer labeled 'TIME' that allows you to adjust the output delay from approximately 0.3 seconds to several minutes.
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