XK Essence

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• Data Transfer: Via Tenovi Gateway
• Sensor Code: 39
• On-Device Measurement Storage: Yes – measurements taken outside of range of the Tenovi Gateway will be saved locally and uploaded the next time the Gateway is in range, as long as the device is not unplugged.
• Supports tracking multiple devices per gateway via Sensor IDs: No – only one device with this Sensor Code can be assigned to a gateway at one time.

Note

The XK Essence offloads data to the Gateway every 6hrs. This data is grouped into 1hr intervals with the following metrics.

Note

The Metrics noted as “Non-Vital” in the tables on each device page are not counted towards the # of days with data in our RPM billing reports (i.e. these Metrics are not considered “physiologic parameters” under current Medicare guidelines).

Metrics

Name	API Format	Value 1	Value 2	Is Vital?*
XK Heart Rate Statistics Measurement	xk_heart_rate_statistics	Median Heart Rate (BPM)	Heart Rate POBC Score	✅
XK Respiratory Rate Statistics Measurement	xk_respiratory_rate_statistics	Median Respiratory Rate (Breaths per Minute)	Respiratory Rate POBC Score	✅
XK Sleep Measurement	xk_sleep_data	Sleep Duration (minutes)	In-Bed Duration (minutes)	✅
XK Hardware Status Data	xk_hardware_status_data	Hardware Sensitivity Index	Hardware Vacancy Count	❌
XK Discovery Log	xk_discovery_log	Serial number of the XK unit discovered in discovery mode	The current RSSI of the connection	❌

Additional Data Included in Filter Params

xk_heart_rate_statistics

Key	Possible Values	Description
heart_rate_mean	40 to 130 0 = invalid	Mean heart rate (BPM)
heart_rate_variance	0 to 2025	Variance of heart (BPM^2)
heart_rate_measurement_count	0 to 1530	Number of heart rate measurements (count 3 seconds)
heart_rate_integrity_score	N/A	Average high-reliability heart rate measurements over the sampling time (count)
heart_rate_deviations	0 to 75	Count of high-reliability heart rate data points exceeding 2σ from the mean within the specified interval
measurement_index	0 to 9999	Gateway internal message counter, this provides a way to correlate measurements together

xk_respiratory_rate_statistics

Key	Possible Values	Description
respiratory_rate_mean	40 to 130 0 = invalid	Mean respiratory rate (RPM)
respiratory_rate_variance	0 to 2025	Variance of respiratory (RPM^2)
respiratory_rate_measurement_count	0 to 1530	Number of respiratory rate measurements (count 3 seconds)
respiratory_rate_integrity_score	N/A	Average high-reliability respiratory rate measurements over the sampling time (count)
respiratory_rate_deviations	0 to 75	Count of high-reliability respiratory rate data points exceeding 2σ from the mean within the specified interval
measurement_index	0 to 9999	Gateway internal message counter, this provides a way to correlate measurements together

xk_sleep_data

Key	Possible Values	Description
measurement_index	0 to 9999	Gateway internal message counter, this provides a way to correlate measurements together

xk_hardware_status_data

Key	Possible Values	Description
distance_median	N/A	Median distance calculated from high-reliability respiratory rate over the specified interval (meters)
distance_mean	N/A	Mean distance calculated from high-reliability respiratory rate over the specified interval (meters)
distance_variance	N/A	Distance variance calculated from high-reliability respiratory rate over the specified interval (meters^2)
pobc_time	0 to 144000	Minutes of the data collected for the POBC calculation
movement_average	N/A	Average relative movement measured over the specified interval (unitless)
data_cursor	N/A	The latest data index within the specified interval (unitless)
measurement_index	0 to 9999	Gateway internal message counter, this provides a way to correlate measurements together

xk_discovery_log

Key	Possible Values	Description
serial_no	N/A	The serial number of the XK unit discovered in discovery mode
rssi	-127 to 10	The current RSSI of the connection

Additional Parameters That Can be Set Via Device Properties

Key	Possible Values	Description
measurement_webhook_id	Webhook UUID	Set this property to configure a Device to only send measurement data to a single Webhook (specified by that Webhook’s ID).

Downloads & Device Support

Device	Resources
Xandar Kardian 300 Essence	Quick Start Guide | User Manual | Device Support