User's Manual

UMXXX
exposure.
• VL53L1X has an operating range from -20 to +85 degrees. Other components on
BlueNRG-2 sensor node have an operating temperature range from -40 to +85
Celsius degrees. The BlueNRG-2 low-energy wireless system-on-chip has a larger
operating range from -40 to +105 Celsius degrees. The ambient temperature and
relative humidity sensor HTS221 has the largest operating range up to +120
Celsius degrees.
• Operating ambient pressure goes from 260 to 1260 hPa. The LSM6DSO
accelerometer sensor may be sensitive to extreme changes in ambient pressure.
Others?
• Operating ambient relative humidity goes from 0 to 100% rH. Please note that the
BlueNRG-2 sensor node board is NOT PROTECTED against condensation of
water. A suitable water-resistant coating must be applied to the board and its
components. Note that any difference in the thermal expansion coefficient will
create mechanical stress between the PCB and the plastic package of the
components. This may affect MEMS sensors (LSM6DSO accelerometer and
gyroscope, LIS2MDL magnetometer, LPS22HH ambient pressure sensor, HTS221
ambient temperature and relative humidity sensor, MP34DT05-A microphone and
VL53L1 time-of-flight sensor). When coating is applied, the venting hole in the
package of LPS22HH and HTS221 should be covered not to contaminate the
sensing element. VL53L1X operates at 940nm wavelength (infrared) and coating,
if present, must be transparent to this wavelength; VL53L1X is strongly advised to
compensate for the optical effects of the coating.
• Please note that, the main component limiting the temperature, humidity and
ambient pressure operating range is the battery. Depending on the chemistry,
typical batteries have very limited or no functionality at or below 0 Celsius degrees.
Moreover, rechargeable batteries cannot operate above +45 Celsius degrees. A
suitable energy source must be selected for operation at low/high temperatures,
ambient pressure or relative humidity.
Operating Conditions for each component
• BlueNRG-2 low-energy wireless system-on-chip in QFN32 package: -40 to +105
Celsius degrees.
• LSM6DSO accelerometer and gyroscope: -40 to +85 Celsius degrees. Max shock
20000 g for 0.2s.
• LIS2MDL magnetometer: -40 to +85 Celsius degrees. Magnetic dynamic range +/-