1 / 7SwitchBot W3400012 Thermometer Hygrometer 4-Pack with Hub 2
Pack: The SwitchBot W3400012 Thermometer Hygrometer combines four wireless temperature and humidity sensors with a Hub 2, according to the listing. Its IP65 rating and app alerts suit monitoring several indoor or outdoor locations, while remote access and voice commands depend on the hub and network setup.
At a glance
- Four sensors are listed with a Hub 2 for app-connected monitoring and remote access.
- The listing claims IP65 dust and water protection for indoor and outdoor use.
- The app can alert when preset temperature or humidity values are exceeded and supports dew point, VPD and absolute humidity readings.
- Temperature and humidity history can be viewed in charts and exported as a CSV file.
Often bought together
SwitchBot IP65 Indoor Outdoor Hygrometer Thermometer Wireless 3Packs, 100m Bluetooth Range, Refrigerator Thermometer, Dewpoint/VPD/Absolute Humidity Sensor, 2-Year Battery Life, Free Data Storage
£27.99
SwitchBot WiFi Weather Stations with Outdoor Sensor Wireless UK, Temperature Humidity Monitor with Date and Weather Forecast, Matter Hub Makes Station Work with Alexa, Apple Homekit, Google Home
£39.99
Pros and cons
Pros
- Four sensors allow monitoring multiple locations from one kit.
- Preset alerts, data charts and CSV export support ongoing environmental monitoring.
- The listing names Alexa, Google Home, Siri Shortcuts and SmartThings support, with a Hub 2 included.
Technical specifications
19 specifications| Brand | SwitchBot |
|---|---|
| Model | W3400012 |
| Temperature range | - 20℃ to 60℃ |
|---|---|
| Upper temperature rating | 50 Degrees Celsius |
| Temperature accuracy | 0.2 degrees_celsius |
| Temperature reading accuracy | plus_minus_0_point_2_degrees_celsius |
| Humidity range | 0 to 100%RH |
| Humidity accuracy | ± 1.8% RH |
| Sampling interval | 4-second sampling interval |
| Sensor | built-in industrial Swiss Sensirion sensor |
| Bluetooth range | 100m, no obstacles |
|---|---|
| On-board data storage | up to 68 days |
| In-app data storage | up to 2 years |
| Cloud storage | unlimited cloud storage |
| Battery life claim | 2 years battery life |
| Dimensions | 60×28×20 mm (2.4×1.1×0.8 in.) |
| Number of items | 5 |
|---|---|
| Number of packs | 4 |
| Included components | Thermometer Hygrometer x4; AAA Battery x8(Including); Hub 2 x1; lanyard x4; |
What to know before buying
Listing details to confirm
The listing gives conflicting temperature limits: a range of - 20℃ to 60℃ and a separate upper rating of 50 Degrees Celsius. Confirm the applicable range and accuracy specification before relying on readings near the limits. The listing also uses two different formats for temperature accuracy. Battery life is a stated two-year claim, with no operating conditions specified.
What’s in the box
Included- Thermometer hygrometers (4)
- AAA batteries (8)
- Hub 2 (1)
- Lanyards (4)
Who is it for?
A good fit for
- People monitoring temperature and humidity across several rooms, storage areas or outdoor locations.
- Greenhouse, instrument-case, cellar or pet-area monitoring where app alerts and data export are useful.
- SwitchBot users who want hub-enabled remote access or voice-command support.
Less suited to
- Buyers who need a clearly consistent confirmed temperature operating range for critical monitoring.
- Anyone seeking a display on each sensor, as no sensor display is specified in the supplied details.
Customer reviews on Amazon
- 5 stars
59% 59% - 4 stars
19% 19% - 3 stars
0% 0% - 2 stars
11% 11% - 1 star
11% 11%
The supplied evidence contains aggregate ratings but no customer comments. The overall rating is moderate, with a majority of five-star ratings and a smaller share of one- and two-star ratings. This offers only a limited, mixed signal about customer experience and does not establish what caused the lower ratings or how the sensors perform.
Frequently asked questions
What is included in the listed kit?
The manufacturer contents list specifies four thermometer hygrometers, eight AAA batteries, one Hub 2 and four lanyards.
Can the sensors be used outdoors?
The listing claims an IP65 rating and describes indoor and outdoor use. It does not provide further installation or exposure conditions.
How are readings accessed remotely?
The listing says Bluetooth readings are available within 100m with no obstacles. It describes remote access and voice commands when using the included Hub 2.
Can monitoring data be exported?
The listing claims up to 68 days of on-board storage and up to two years of in-app storage, plus CSV export. It also states unlimited cloud storage.
Alternative options
GEEVON-LINK Bluetooth Thermometer Hygrometer, Indoor Temperature Humidity Sensor with Electronic Ink Display, App Notification Alert, Free Data Storage Export, Digital Remote Monitor for Bedroom (5)
£32.29
SwitchBot Indoor Thermometer Hygrometer 3 Pack, Indoor Temperature Humidity Sensor with Smart Alert & 68-Day Data Storage, 3In Bluetooth Room Thermometer (Meter Plus 3Pack)
£26.99
SwitchBot Smart Room Thermometer Hygrometer Sensor Indoor 2Packs, Bluetooth Digital Temperature Monitor with Free Data Storage, Dewpoint/VPD/Absolute Humidity Meter, LCD Screen Wireless Thermometer
£13.99
SwitchBot Hub 3 for Home Automation, Matter Bridge Smart Home Hub with IR & Bluetooth Remote, work as a WiFi Thermometer Hygrometer, Supports Alexa/Apple HomeKit/Google Home/IFTTT
£89.69
SwitchBot CO2 detector with IP65 Hygrometer, Temperature Humidity Monitor with carbon dioxide monitor, Bluetooth CO2 Monitor, 2-Year Data Storage, SwitchBot Hub Required for WiFi Function
£50.99
SwitchBot WiFi Thermometer Hygrometer 3 Pack with Hub Mini, IP65 Indoor Outdoor Thermometer Wireless, Humidity/Temperature/Dewpoint/VPD/Absolute Humidity Sensor with Smart Alerts, Works with Alexa
£39.99
SwitchBot Indoor Thermometer Hygrometer 3 Pack, Indoor Temperature Humidity Sensor with Smart Alert & 68-Day Data Storage, 3In Bluetooth Room Thermometer (Meter Plus 2+ Hub Mini)
£49.99