Best Buy BHTC02 User manual

BHTC02
User’s
Manual
© 2021 Best Buy Co., Inc.
January 21st, 2021
Version 1.1

User’s Manual v1.0
2
Introduction
This sensor uses advance signal processing algorithms and novel biomechanical models of human
motion to identify a complete physical activity map of the user from data measured by a single,
lightweight, wearable motion sensor. This User’s Manual will give you important information for using
this motion sensor.
Intended Use
This sensor is intended for long-term monitoring of gait (number of steps) and falls (number of falls). It
is neither offered, marketed nor intended for use as a medical device, as defined by the Food and
Drug Administration. This sensor is intended and marketed solely for use in research settings.
Components of Your System
BHTC02 consists of a wearable motion sensor, lanyard, wristband, and a Micro USB charging unit
for the sensor. The motion sensor can be worn around the neck or on the wrist using the provided
lanyard or wristband attachment accessories respectively.
Safety Instructions
Make sure you have read and understood all the information listed in this document prior to using the
motion sensor.
• If a motion sensor is used among numerous individuals and placed directly onto the patient
(instead of over clothing) it should be cleaned and disinfected in an appropriate manner prior
to re-use. Sensors can be cleaned using an alcohol swab.
• Ensure that motion sensor straps are not cutting off blood flow.
• Motion sensors should be charged only using the charger provided withyour system.
Warning: The sensor contains a lithium polymer battery. Please follow local regulations regarding
disposal or recycling of lithium-containing electronics. Do not throw the device away in the trash.

User’s Manual v1.0
3
FCC Compliance Information
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference and
2. This device must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications not expressly approved by Best Buy Co., Inc. could void the user’s
authority to operate the equipment.
This BHTC Research Device model BHTC02 has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to correct the interference by one
of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
-- Consult the dealer or an experienced radio/TV technician for help.
For this or other issues, please contact:
[e-mail]
Best Buy Co., Inc
Boston Health Technology Center
42 Pleasant St, Suite 2
Watertown, MA 02472
WARNING!
FCC Exposure Statement
This portable equipment with its antenna complies with FCC’s RF radiation exposure limits set forth
for an uncontrolled environment. To maintain compliance, follow the instructions below:
1. This transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.
2. Avoid direct contact to the antenna or keep contact to a minimum while using this equipment.

User’s Manual v1.0
4
Getting to Know Your Motion Sensors
The motion sensor is intended to be worn around the neck or on the wrist. The side with the small
square recessed Interaction Button should be facing away from the body. The sensor label is on the
side of the motion sensor that should be facing the body.
Recharging the Sensor
The motion sensor is equipped with a rechargeable lithium battery. When recharging, please use only
the supplied charging unit. If the sensor unit is powered off the unit will still be charging. If the sensor
unit is powered on, the charger indicator will light up, indicating that the sensor unit has been correctly
plugged in. When the battery is fully charged, the charger indicator turns steady green.
The normal charge time is about 1 hour. For a highly depleted battery, a longer recharge and battery
conditioning period might be needed.
Accessing the Sensor’s Charging Port
The micro-USB port located on the bottom side of the motion sensor is for recharging the sensor using
the supplied charging unit.
Remove the orange cover to access the charging port. Remember the orientation of the sensor (USB
port facing down) with respect to the attachment accessory before removing the orange cover.
Pressing outward on the thickest part of the cover where the wrist strap or lanyard string is connected
will allow the orange cover to pop off. Pay attention to the orientation of the sensor and replace the
orange cover after charging is complete.
Storage and Maintenance
Motion Sensors should be stored in a cool dry place. Motion sensors should be fully charged prior to
storage to maximize battery lifetime. If motion sensors become dirty, they can be cleaned using an
alcohol swab. During cleaning be careful not to allow moisture into the USB port.
Wrist configuration Neck configuration
Figure 1. Sensor Placement in Attachment Accessories

User’s Manual v1.0
5
Sensor’s Interaction Button
The recessed Interaction Button is used to power-on, power-off, or display the status of the motion
sensor.
Figure 2. Interaction Button
LED Guide for Interaction Button
If the motion sensor’s status LED is continually flashing yellow the battery is low and the sensor should
be planned to be recharged soon. If the motion sensor status LED is continually flashing red the battery
is critically low and the sensor should be recharged immediately.
The motion sensor should be recharged using the provided charger. The status LED will flash green
during charging. When the battery is fully charged, the LED will become a steady green.
Figure 3. LED Interaction Guide
How To Perform w/
Interaction Button
LED Feedback
Power sensor ON
Hold down for 3
seconds
3 quick blue LED flashes
Power sensor OFF
3 quick red LED flashes
Check if sensor is ON One short press
1 quick green LED flash
(Also indicates battery level of sensor is good)
Check if sensor if OFF
1 quick red LED flash

User’s Manual v1.0
6
Data Collection
Sensor Placement (on the body)
The motion sensor is designed to be worn by the user around their neck or on their wrist using the
provided lanyard or wristband attachments respectively.The recessed Interaction button should be
facing away from the body.
Recording Data
To begin recording data, turn the motion sensor on by pressing and holding the Interaction button
for 3 seconds.The LED will flash blue three times when the motion sensor is turned on.
The user should place the motion sensor around the neck or on the wrist using the provided lanyard
or wristband attachment accessories. Once the motion sensor is in place, it is now ready to collect
and record physical activity and fall data.
Data Transfer
Recorded data is transferred to a computer using the micro-USB cable provided with the motion
sensor. In some cases, the motion sensor may be able to connect to a mobile device via Bluetooth
in order to offload and visualize data.

User’s Manual v1.0
7
Specifications
Condition Specification
Waterproof rating IPX7
Sampling Frequency 50 Hz
Accelerometer ± 2/4g
Motion Sensor Size 3.5 cm x 3.5 cm x 1.5 cm
Motion Sensor Weight 24 grams (0.85 oz)
Storage Temperature -30 to 50 degrees C
Operating Temperature 10 to 40 degrees C
Battery Life 200 hours (upgradeable to 340 hours)
Bluetooth Radio Bluetooth v4.2, Class II, FCC ID: UQ5BHTC02
Certifications
FCC ID: UQ5BHTC02
DISCLAIMER:
This platform and algorithms for physical activity measurement are protected by U.S. Patent No.
8,206,325, and other patents pending. This sensor is intended and marketed solely for use in
research settings.
Information in this document is subject to change without notice