Sensors

Every sensor exposed by the integration. All live under one Suunto device. The Source column tells you which coordinator updates it - Live (your "Live data interval", default 15 min) or History (your "History interval", default 60 min). See Configuration for the intervals and Derived Metrics for the maths behind the computed ones.

Entity IDs: Home Assistant builds entity_id from your device name + the sensor name. If your device is named Suunto, the readiness sensor is sensor.suunto_readiness; if you renamed the device, the prefix changes (the unique IDs are stable, so renaming the device doesn't break automations that use entity_id only if you update them). Examples below use the sensor.suunto_... prefix.

unknown values are normal for some sensors - depending on your watch model and what has synced. E.g. light/REM sleep, SpO₂ or HRV may be absent. See Troubleshooting & FAQ.

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Sleep (Source: History)

Sensor	Entity (example)	Unit	Notes
Sleep duration	sensor.suunto_sleep_duration	h	Total of all fragments of the night.
Deep sleep	sensor.suunto_sleep_deep	min
Light sleep	sensor.suunto_sleep_light	min	May be unknown on some watches.
REM sleep	sensor.suunto_sleep_rem	min	May be unknown on some watches.
Sleep average heart rate	sensor.suunto_sleep_avg_hr	bpm
Sleep minimum heart rate	sensor.suunto_sleep_min_hr	bpm	Used as the resting-HR signal.
Sleep quality	sensor.suunto_sleep_quality	%
Sleep blood oxygen (SpO₂)	sensor.suunto_sleep_spo2	%	May be unknown.
Sleep HRV	sensor.suunto_sleep_hrv	ms	Feeds the HRV baseline.
Sleep start	sensor.suunto_sleep_time	timestamp	When the night began.
Wake-up time	sensor.suunto_wake_time	timestamp	End of the last sleep fragment (derived - the API has no explicit wake field).

A night is returned by the API in multiple fragments (one per wake). The integration groups them with a noon-to-noon key and sums durations / duration-weights the rates, matching what the Suunto app shows. See Data & Units.

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Recovery (Source: History)

Sensor	Entity (example)	Unit	Notes
Recovery balance	sensor.suunto_recovery_balance	%	Suunto's resources/balance metric.
Stress state	sensor.suunto_stress_state	-	Enum-style integer from the watch.

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Daily activity (Source: Live)

Sensor	Entity (example)	Unit	Notes
Current heart rate	sensor.suunto_current_hr	bpm	Latest 24/7 sample (steps to the newest synced value).
Daily steps	sensor.suunto_daily_steps	steps	Today's sum; total_increasing.
Daily energy	sensor.suunto_daily_energy	kcal	Today's sum; total_increasing.

The live current_hr sensor only records the latest value at poll time - it cannot backfill an intraday curve. For a gap-free HR curve with workout peaks, use the suunto_app:hr statistic (see Long-term Statistics).

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Last workout (Source: History)

Sensor	Entity (example)	Unit	Notes
Last activity	sensor.suunto_last_activity	-	Activity name (see Activity Types).
Last workout start	sensor.suunto_last_workout_start	timestamp
Last workout location	sensor.suunto_last_workout_location	-	State = "lat, lon"; the latitude/longitude attributes plot it on a Map card. unknown for indoor workouts with no GPS. See Dashboard Examples.
Last workout distance	sensor.suunto_last_distance	m
Last workout duration	sensor.suunto_last_duration	min
Last workout ascent	sensor.suunto_last_ascent	m
Last workout descent	sensor.suunto_last_descent	m
Last workout ascent time	sensor.suunto_last_ascent_time	min	Time spent climbing.
Last workout descent time	sensor.suunto_last_descent_time	min	Time spent descending.
Last workout min altitude	sensor.suunto_last_min_altitude	m	unknown indoors - no barometer reading.
Last workout max altitude	sensor.suunto_last_max_altitude	m	unknown indoors - no barometer reading.
Workout recovery time	sensor.suunto_recovery_time	h	Suunto's recommended recovery.
Recovered at	sensor.suunto_recovery_until	timestamp	When the recovery countdown ends (workout end + recovery time).
Last workout average heart rate	sensor.suunto_last_avg_hr	bpm
Last workout max heart rate	sensor.suunto_last_max_hr	bpm
Last workout average speed	sensor.suunto_last_avg_speed	km/h
Last workout average pace	sensor.suunto_last_avg_pace	min/km
Last workout cadence	sensor.suunto_last_cadence	rpm	Unit is correct for cycling; for running it may read as cycle-rpm/spm depending on the watch.
Last workout training stress (TSS)	sensor.suunto_last_tss	-	Drives the training-load model.
Peak Training Effect (PTE)	sensor.suunto_last_pte	-	Suunto's own 1..5 rating of the session's impact - measured by the watch, not derived here. Also shown in the workouts calendar.
Time in HR zone 1...5	sensor.suunto_last_zone1 ... _zone5	min	Five sensors.

Per-workout derived (Source: History)

Sensor	Entity (example)	Unit	Notes
% of max HR	sensor.suunto_last_pct_hrmax	%	avg HR / user max HR.
Calories per km	sensor.suunto_last_cal_per_km	kcal/km
Ascent rate	sensor.suunto_last_ascent_rate	m/h
Stride length	sensor.suunto_last_stride	m	Only for foot-based activities (empty for cycling, where cadence is pedal RPM). See Activity Types.

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Fitness (Source: History)

Sensor	Entity (example)	Unit	Notes
VO2max	sensor.suunto_vo2max	ml/kg/min	As measured by the watch.
Estimated VO2max	sensor.suunto_estimated_vo2max	ml/kg/min	The watch's own estimate.
Fitness age	sensor.suunto_fitness_age	years

Suunto derives all three from runs and walks only - they are always null on a ride. Each sensor therefore holds its most recent non-null reading from the whole fetched history, and carries measured_at / measured_from attributes so you can see how old it is. On a cycling-heavy account the value can legitimately be months old.

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Lifetime totals (Source: History)

Sensor	Entity (example)	Unit	Notes
Lifetime distance	sensor.suunto_lifetime_distance	km	total_increasing.
Lifetime training time	sensor.suunto_lifetime_time	h	total_increasing.
Lifetime energy	sensor.suunto_lifetime_energy	kcal	total_increasing.
Lifetime workouts	sensor.suunto_lifetime_workouts	workouts	total_increasing.
Lifetime active days	sensor.suunto_lifetime_days	d	total_increasing.
Lifetime by activity	sensor.suunto_lifetime_by_activity	-	State = number of sports; the per-sport totals (distance/time/count/energy) ride in the activities attribute. See Dashboard Examples.

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Weekly volume & counts (Source: History)

Sensor	Entity (example)	Unit	Notes
Distance (7 days)	sensor.suunto_weekly_distance	km	Rolling 7-day workout distance.
Training time (7 days)	sensor.suunto_weekly_time	h	Rolling 7-day workout time.
Workouts (7 days)	sensor.suunto_workouts_7d	workouts
Workouts (30 days)	sensor.suunto_workouts_30d	workouts	Explicitly filtered to 30 days.
Recent workouts	sensor.suunto_workouts_recent	workouts	State = count; the last 15 sessions ride in the workouts attribute for a table card. See Workouts Calendar & Recent.

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Training load (derived) (Source: History)

Sensor	Entity (example)	Notes
Fitness (CTL)	sensor.suunto_fitness_ctl	Chronic Training Load (42-day EWMA of TSS).
Fatigue (ATL)	sensor.suunto_fatigue_atl	Acute Training Load (7-day EWMA of TSS).
Form (TSB)	sensor.suunto_form_tsb	CTL - ATL. Positive = fresh, negative = fatigued.
Acute:chronic load ratio (ACWR)	sensor.suunto_acwr	Safe zone ~0.8-1.3.

Full formulas in Derived Metrics.

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Recovery baselines & readiness (derived) (Source: History)

Sensor	Entity (example)	Unit	Notes
Readiness	sensor.suunto_readiness	% (0-100)	Heuristic blend of sleep, HRV, resting HR, recovery balance. Not an official Suunto metric.
HRV baseline	sensor.suunto_hrv_baseline	ms	Mean over the sleep-night HRV series.
HRV status	sensor.suunto_hrv_status	enum	low / balanced / high vs +/-1 SD.
Resting heart rate	sensor.suunto_resting_hr	bpm
Resting heart rate baseline	sensor.suunto_resting_hr_baseline	bpm	Mean over the night series.

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Not a sensor: the workouts calendar

There is also a calendar entity (every past workout as an event). It is on the same device but is not in the sensor count. See Workouts Calendar & Recent.

Not sensors: long-term statistics

The suunto_app:* long-term statistics are external statistics, not entities - they won't show up in the entity list and don't add to the sensor count. View them in a Statistics Graph card. See Long-term Statistics.