Aqara Temperature and Humidity Sensor T1 Review: Climate Monitoring Made Simple

Introduction

Climate monitoring might not sound exciting, but it’s the foundation of some of the smartest home automations. The Aqara Temperature and Humidity Sensor T1 (温湿度传感器T1) measures temperature and humidity with surprising accuracy — ±0.3°C and ±3% RH — at just ¥79 (~$11 USD) on JD.com.

With 18,000+ reviews on JD.com and a 96% positive rating, it’s one of Aqara’s best-selling climate sensors. From triggering humidifiers and AC units to baby room monitoring, the T1 punches above its weight.

Specifications

Feature	Aqara T1	Aqara (Gen 1)	Xiaomi Temp Sensor 2
Price	¥79	¥59	¥29
Protocol	Zigbee 3.0	Zigbee 1.2	Bluetooth Mesh
Temp Accuracy	±0.3°C	±0.3°C	±0.3°C
Temp Range	-20°C to 60°C	-20°C to 60°C	-10°C to 50°C
Humidity Accuracy	±3% RH	±3% RH	±3% RH
Humidity Range	0-100% RH	0-100% RH	0-99% RH
Battery	CR2450 (2 years)	CR2032 (1 year)	CR2032 (1 year)
Atmospheric Pressure	Yes	No	No
HomeKit	Yes	Yes	No
Hub Required	Yes (Aqara)	Yes	Yes

Design and Build

The T1 is a 36mm square, 11mm thick white plastic square. It’s slightly larger than the Gen 1 but includes an atmospheric pressure sensor and longer battery life. The front features a subtle Aqara logo and a tiny LED indicator that flashes during pairing.

It comes with a 3M adhesive pad and a lanyard loop — you can stick it to a wall, hang it in a corner, or just place it on a shelf. The lanyard option is great for temporary placement in different rooms.

Build quality is solid for a ¥79 sensor. The body feels dense, the battery door closes securely, and there are no visible seams or gaps.

Performance

Temperature accuracy is impressive at ±0.3°C. I tested it against a calibrated thermometer and the readings were consistently within 0.2°C. The sensor reports on change (default: ±0.5°C or ±5% RH) or every hour — configurable in the Aqara Home app.

Humidity readings are equally reliable at ±3% RH. The sensor responds to humidity changes within 2-3 minutes — fast enough for automations but not instantaneous.

The atmospheric pressure sensor is a bonus at this price. It’s not as precise as a dedicated barometer, but it’s useful for weather trend automations (e.g., “if pressure drops rapidly, close windows”).

Battery life is rated at 2 years on a single CR2450 — double the Gen 1’s lifespan. The larger battery is worth the slightly bigger body.

What Chinese Users Say

Aggregated Ratings: 4.6/5 ★ (18,000+ reviews on JD.com, 96% positive)

“Essential for the baby’s room — temperature and humidity at a glance. Set humidifier to auto-on below 40% RH, AC dehumidify above 60% — baby sleeps soundly. ¥79 for peace of mind is money well spent.”

“Accuracy is genuinely good — within 0.2°C of my home thermometer. Barometric pressure is mediocre, but temperature and humidity data is reliable. Battery life is truly solid.”

“Paired with Aqara Hub and XiaoAI — voice query for room temp and humidity. Reminds me to run the humidifier in winter and AC in summer. Thoughtful.”

“Hung in the bathroom to monitor humidity during showers — auto-activates the exhaust fan. Recommend buying several, one per room — compare data across rooms in the app.”

Pros & Cons

Pros:

• ±0.3°C accuracy — surprisingly good at this price
• Atmospheric pressure sensor included
• 2-year battery life on CR2450
• Zigbee 3.0 for reliable, low-latency reporting
• Tiny and unobtrusive
• Apple HomeKit compatible

Cons:

• Requires Aqara Zigbee hub
• Slow response to rapid temperature changes (2-3 min)
• Atmospheric pressure less accurate than dedicated sensor
• No display — must check phone for readings
• White color only

vs Competitors

vs Xiaomi Temp Sensor 2 (¥29): Xiaomi’s sensor is a third of the price and doesn’t need a separate hub (Bluetooth Mesh). But it lacks atmospheric pressure, has shorter battery life, and Bluetooth range is limited. Aqara’s reliability is worth the premium.

vs Aqara TVOC Sensor (¥199): The TVOC sensor adds air quality (VOC) monitoring. If you only need temperature and humidity, the T1 is the more cost-effective choice.

FAQ

Q: Can I use it outdoors? A: The T1 is rated for -20°C to 60°C, but it’s not weatherproof. Covered outdoor placement (porch, balcony with roof) is fine. Direct rain/snow exposure will damage it.

Q: How often does it update? A: It reports on change (configurable threshold) or every 60 minutes at minimum. You can force a reading refresh from the Aqara Home app.

Q: Does it need calibration? A: No — it arrives factory-calibrated. If readings seem off, try placing it away from heat sources and direct sunlight.

Rating: 4.5/5

Category	Score
Accuracy	9/10
Build Quality	8/10
Features	8/10
Value	9/10
Battery Life	10/10

Who should buy: Parents monitoring nurseries, greenhouse/grow-tent operators, smart home enthusiasts building climate automations.

Who should skip: Users wanting a display on the sensor itself. Those needing VOC/eCO2 monitoring.