IRA‑S210ST01 | Murata Thermoelectric PIR Human Infrared Sensor

Key Parameters

• Supply Voltage: 2V‑15V DC, capable of low‑voltage operation

• Output: Analog voltage output; typical sensitivity 4.6 mV, minimum 3.6 mV

• Field of View (FOV): 45° horizontal / 45° vertical

• Sensing Window: 5 μm long‑pass filter, tuned to human‑body 10 μm infrared radiation; suppresses visible‑light interference

• Sensing Elements: Dual sensing units (2.0×1.0 mm)×2

• Operating Temperature: ‑40℃ ~ +70℃ (non‑automotive grade, not for vehicle applications)

• Storage Temperature: ‑40℃ ~ +85℃

• Package Dimensions: TO‑5 metal can, φ9.2 mm diameter, 4.7 mm height, 3‑pin through‑hole mounting

• Packaging: Boxed, 100 pcs per box

• Features: High signal‑to‑noise ratio (S/N), resistance to ambient temperature fluctuation and electromagnetic interference; cannot measure object temperature directly, only detects moving human‑body motion.

Functions & Features

Utilizes the pyroelectric thermoelectric effect to detect infrared thermal radiation emitted by moving human bodies and output variable analog voltage signals. Post‑processing by MCU (e.g. STM32) plus operational amplifier is required.Must be used with Fresnel lens (IML‑0685 / IML‑0688) to extend detection range and segment detection zones; bare sensor delivers very short detection distance.Only responds to moving heat sources; stationary human bodies will not trigger output.

Applications

For indoor civil use only; not intended for automotive scenarios‑ Security intrusion detectors, wall‑mounted human‑motion alarm sensors‑ Smart lighting, human‑body induction switches‑ Smart home, indoor human‑presence detection devices‑ Human‑motion trigger for indoor industrial equipment