BMT01 - Thermometer Sonoff - Free user manual and instructions
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| Product Type | Smart Wireless Thermometer |
| Brand | Sonoff |
| Model | BMT01 |
| Connectivity | Bluetooth Low Energy (BLE) 5.0 |
| App Compatibility | eWeLink app (iOS & Android) |
| Temperature Range | -20°C to 60°C (-4°F to 140°F) |
| Temperature Accuracy | ±0.3°C |
| Humidity Range | 0% to 99% RH |
| Humidity Accuracy | ±3% RH |
| Display | LCD with temperature and humidity |
| Power Source | 1 × CR2477 3V coin cell battery |
| Battery Life | Up to 1 year |
| Dimensions | 60 × 30 × 12 mm |
| Weight | 30 g (with battery) |
| Mounting | Table stand or wall bracket |
| Data Logging | 24-hour trend graphs in app |
| Alerts | High/low temperature notifications |
| Maintenance | Wipe with soft dry cloth |
| Safety | Do not expose to fire or water |
| Repair | Non-user-serviceable; contact Sonoff support |
| Compatibility | Works with Sonoff BLE gateway for remote access |
Frequently Asked Questions - BMT01 Sonoff
How do I set up my Sonoff BMT01?
Download the eWeLink app, create an account, then tap '+' to add a device. Select 'BMT01' from the list and follow the on-screen instructions to pair it via Bluetooth. Keep your phone within a few meters of the sensor during setup.
Can the BMT01 measure humidity?
Yes, the BMT01 is a combined temperature and humidity sensor. It measures ambient temperature from -20°C to 60°C and relative humidity from 0% to 99% RH, with an accuracy of ±0.3°C for temperature and ±3% for humidity.
How do I change the battery?
Open the battery compartment on the back of the device (slide the cover off). Remove the old CR2477 coin cell battery and insert a new one with the correct polarity (+ side up). Replace the cover. The device will reconnect automatically once powered.
How do I pair the BMT01 with my phone?
Ensure Bluetooth is enabled on your phone, then open the eWeLink app. Go to 'Add Device', select 'BMT01', and confirm the sensor is in pairing mode (it is always discoverable when powered). The app will find it within seconds.
Can I set temperature alerts?
Yes, in the eWeLink app you can set low and high temperature thresholds. When the temperature goes outside your set range, you will receive a push notification on your phone.
What is the Bluetooth range?
The Sonoff BMT01 uses Bluetooth Low Energy and has a typical range of about 10 meters in indoor environments. Obstacles like walls can reduce that range.
How do I clean the thermometer?
Use a soft, dry cloth to gently wipe the exterior. Do not use solvents or immerse the device in water, as it may damage the internal electronics.
Is the BMT01 waterproof?
No, the BMT01 is not waterproof. It is designed for indoor use and should be kept away from moisture and water to prevent damage.
Does the BMT01 work with Alexa or Google Assistant?
Yes, if you connect the BMT01 to the eWeLink app and enable the corresponding skill, you can control it with voice assistants like Alexa or Google Assistant through the Sonoff cloud.
What is the best placement for the sensor?
Place the BMT01 in an area you want to monitor, away from direct sunlight, heat sources, and open windows. Ensure it is within Bluetooth range of your phone or a compatible gateway for reliable readings.
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USER MANUAL BMT01 Sonoff
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Product information
Brand : Sonoff
Model : BMT01
Category : Thermometer