Smart WiFi Thermostat with DS18B20 Sensor – Precision temperature control from anywhere
Ever left the house and worried if you left the greenhouse heater on? Or perhaps you want your floors perfectly warm the moment you walk through the door? This smart WiFi thermostat with a waterproof DS18B20 sensor lets you manage your climate in seconds, straight from your smartphone. It is compatible with almost any heating, ventilation, or electrical appliance up to 16A, and is simple enough to set up without needing a professional electrician.
Note: This device requires a 2.4GHz WiFi network. It is not compatible with 5GHz networks.
Why choose this model? (Key Benefits):
- Real-time thermal control — Adjust your temperature from anywhere in the world via the Tuya Smart or Smart Life app with zero lag.
- Waterproof DS18B20 sensor included — Measures temperatures from -55°C to +125°C. With its 1-metre cable, it is perfect for installation in screed, boilers, or greenhouses.
- 16A / 3000W Relay — Easily handles central heating boilers, circulation pumps, and electric heating elements without overloading.
- Energy efficiency — Use the 8-stage scheduling feature to turn off heating when the house is empty, helping you save on your energy bills.
- Voice control — Works seamlessly with Amazon Alexa and Google Home without the need for an additional hub.
- Family sharing — Multiple family members can control the device from their own phones via the app.
- Power-loss memory — Your settings are saved automatically, so the device resumes operation immediately after a power cut.
Performance and Technical Specifications
The IEEE 802.11 b/g/n WiFi module ensures a stable 2.4GHz connection. The internal relay supports resistive loads up to 16A, making it suitable for gas boilers and heat pumps with dry contact. The housing is crafted from V0-rated fireproof ABS, providing peace of mind for continuous, long-term operation.
| Parameter | Value / Detail |
|---|---|
| Supply Voltage | AC 85–250V (220V) |
| Maximum Current | 16A / 3000W |
| WiFi Frequency | 2.4GHz – IEEE 802.11 b/g/n |
| Compatible Apps | Tuya Smart, Smart Life |
| Operating Systems | Android, iOS |
| Voice Assistants | Amazon Alexa, Google Home |
| Housing Material | V0 Fireproof ABS |
| Unit Dimensions | 94 x 57 x 32 mm |
| Temperature Sensor | Waterproof DS18B20 |
| Measurement Range | -55°C to +125°C |
| Sensor Cable Length | 1 metre |
| Sensor Weight | 26g |
Setup and Programming Guide
- Download the Tuya Smart or Smart Life app from the Google Play Store or Apple App Store and create your account.
- Connect the thermostat to your power supply (85–250V AC) following the provided wiring diagram.
- Ensure your phone is connected to a 2.4GHz WiFi network before starting the configuration.
- Press and hold the configuration button on the device for 5 seconds until the LED indicator flashes rapidly.
- In the app, tap ‘+’ → ‘Add Device’ → ‘Electrician’ → ‘Switch’.
- Enter your WiFi password and follow the on-screen pairing instructions.
- Once connected, set your desired temperature thresholds and schedules.
- Optional: Create automated scenarios, such as turning the heating on below 18°C and off above 22°C.
Package Contents
- 1 x Smart WiFi Thermostat 16A
- 1 x Waterproof DS18B20 Temperature Sensor (1m cable)
Frequently Asked Questions
Does the thermostat work if the internet goes down?
Yes. The previously set temperature thresholds are stored locally. You will temporarily lose remote control and voice command functionality, but these will automatically reconnect once your internet is back online.
Can I use multiple DS18B20 sensors at once?
No. This device is designed to support one DS18B20 sensor. For multiple zones, you will need separate units.
Is it compatible with gas central heating boilers?
Yes. It can control boilers and circulation pumps via dry contact, within the 16A / 3000W limit. Please verify your boiler’s contact type before installation.
Can I use this for underfloor heating?
Absolutely, it is one of the most common applications. The waterproof DS18B20 sensor can be installed directly into the screed or a protective conduit without risk of damage.
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