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| Part Number | SI1181-B3-GM | SI1181-B4-GM | SI1181-B3-GMR |
| Manufacturer | Silicon Labs | Silicon Labs | Silicon Labs |
| Series | - | - | - |
| Packaging | Tube | Bulk | Bulk |
| Product Status | Obsolete | Obsolete | Obsolete |
| Sensor Type | Optical | Biometric Optical Heart Rate | Biometric Optical Heart Rate |
| Output Type | I2C, SPI | I2C, SPI | I2C, SPI |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Grade | - | - | - |
| Qualification | - | - | - |
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