The 7Semi Human Presence and Motion Sensor is a compact and intelligent infrared sensing module built around the advanced STHS34PF80 sensor for accurate human presence, motion, and ambient temperature detection. Using precision black-body infrared sensing technology, the module detects both stationary and moving human targets up to 4 metres away without requiring additional optics or lenses.
Designed for smart automation, occupancy sensing, and low-power IoT applications, the module features an 80° field of view and an integrated smart processing engine capable of distinguishing between static and dynamic objects. Its floating thermal transistor architecture minimizes self-heating effects, ensuring stable and reliable detection across varying indoor conditions.
The board includes a 6-pin JST XH 2.5mm connector, onboard I2C/SPI interface support, standard PTH breakout pins, mounting holes, and a power status LED for easy integration into embedded systems, smart lighting, security devices, automation systems, and intelligent occupancy monitoring solutions.
Features
• Advanced STHS34PF80 infrared sensing technology for human presence and motion detection
• Detects stationary and moving human targets up to 4 metres
• Wide 80° field of view for large-area coverage
• Integrated smart algorithms for reliable occupancy detection
• Built-in IR band-pass filter operating in the 5–20 µm range
• Low-power operation suitable for battery-powered IoT devices
• Supports both I2C and SPI communication interfaces
• 6-pin JST XH 2.5mm side-entry connector for easy wiring
• Additional PTH pins for flexible prototyping and development
• Factory-calibrated sensor for stable and accurate measurements
Resources


- Sensor Model:
- STHS34PF80 (STMicroelectronics)
- Field of View:
- 80 deg
- Detection Range:
- Up to 4 metres
- Supply Voltage:
- 3.3V
- Supply Current:
- 10 uA
- Interface:
- I2C / 3-wire SPI
- ODR Range:
- 0.25 Hz to 30 Hz
- One-Shot Mode:
- Supported
- IR Sensitivity:
- 2000 LSB/°C
- RMS Noise:
- 25 LSBrms
- Operating Wavelength:
- 5 µm to 20 µm
- Temperature Accuracy:
- +-0.3°C
- Connectivity:
- 6-Pin JST XH 2.5mm Side Entry
- Board Pins:
- 3V3, GND, SCL, SDA, CS, INT
- Indicators:
- Red Power LED
- Mounting:
- Four mounting holes
- I2C Address:
- 0x5A (Default)
- _3d_glb:
- https://7semi.com/content/3d-files/10431.glb