Tested with salt and distilled water, all but 3 were within 1%. These lazy things were 2% cheaper. It was sarcasm, they really impressed me. I have a calendar reminder to test it again in 6 months, I'll try to remember to update this review for accuracy and battery life.
Xiaomi Mijia Bluetooth Hygrothermograph 2, white
219 Review
Wintact Handheld Anemometer Small Digital Vane Wind Speed Meter Gauge, Pocket Air Flow Velocity Tester With Measuring Wind Temperature 14℉ To 113℉ For House HVAC Duct Outdoor Kite Boat Sailing Surfing
18 Review
Xiaomi Mijia Temperature And Humidity Electronic Watch, white
50 Review
Xiaomi Mijia Hygrometer Bluetooth Global Thermometer, white
32 Review
🥛 Electrolux EACS-12HG2/N3 Split System Air Conditioner with Milk Cooling Feature
12 Review
Split system Roda RS-AL09F / RU-AL09F
37 Review
White Senville Dual Zone Mini Split Air Conditioner Heat Pump, 28000 BTU, Alexa Compatible - SENA-30HF/D
21 Review
UL Certified 120V Unheated Awoco 48 Super Power 2 Speeds 1650CFM Commercial Indoor Air Curtain With Free Door Switch
23 Review