So reliable, it’s going to the moon.
RM3100 Magnetic Sensor
Incredible resolution with low power, low mass, small size and large dynamic range.

Impeccable signal to noise, no drift, and precise magnetic field measurements make integration of the RM3100 sensor simple and ideal for underwater, air, satellite, and spacecraft application.
Download results from Lawrence Berkeley Cyclotron radiation and heat test below.
Stable and reliable over time and temperature and extremely radation tolerant.
I2C and SPI interfaces.
Proven in real world across a wide range of applications, including the Artemis Space Program.
Technical Specifications
Cycle Counts | |||
---|---|---|---|
Parameter | 50 | 100 | 200 |
Field Measurement Range | ± 1100 µT | ||
Noise | 30 nT | 20 nT | 15 nT |
Gain @ 3V (LSB/µT) | 20 µT | 38 µT | 75 µT |
Linearity over ± 200 µT | 0.5% (typical) | ||
Sensitivity | 50 nT | 26 nT | 13 nT |
Max 3-Axis Sample Rate | 534 Hz | 284 Hz | 147 Hz |
Current Usage @ 8 Hz, 3 Axes | 70 µA | 135 µA | 260 µA |
Circuit Oscillation Frequency | 180 kHz | ||
Interface | SPI and I2C | ||
Operating Temperature Range | -40°C to +85°C | ||
Size (L x W x H) | SEN XY SEN Z MagI2C RM3100 Breakout Board | 6.0 x 2.1 x 2.2 3.88 x 2.98 x 6.35 mm 4.0 x 4.0 x 0.75 mm 25.4 x 25.4 x 7.1 mm |
Downloads for RM3100
Related Articles
Single-event effect testing of the PNI RM3100 magnetometer for space applications
Investigation of a low-cost magneto-inductive magnetometer for space science applications
Try our products for yourself
Order one of our RM3100 Breakout Boards to easily evaluate the performance of our RM3100 sensor suite.

RM3100 Breakout Board Unit
Price per unit:
$25.00
This Breakout Board incorporates both I2C and SPI interfaces for system design flexibility and easily connects to Arduino, Raspberry Pi, and other microcontroller boards.
Note: Maximum order quantity is ten (10) units. Please contact sales@pnicorp.com if you wish to purchase larger quantities.
SKU: 14190-1 / Category: Magnetic Sensors
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