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Three small black rectangular sensors with lanyards shown together

W3400010 SwitchBot control sensor 394ft Bluetooth IP65 2yr battery 3-pack

SKU CH-Z1JN-RT5TS MPN W3400010

Three IP65-rated hygrometer-thermometers track temperature, humidity, dew point and VPD with Swiss Sensirion accuracy, store 68 days on-board and two years in-app.

  • Item nameW3400010 SwitchBot
  • Placement and useWall Mount
  • Item descriptionSwitchBot, W3400010, 3*Smart Thermometer, 1*multi-country ma
  • Overall size77 mm × 52 mm × 74 mm
  • Surface finishBlack
  • Product weight0.19 kg
  • Monitors temperature and humidity accurately with Swiss sensor precision
  • Withstands rain and dust outdoors thanks to IP65 rating
  • Connects via Bluetooth up to 394 ft without obstacles
  • Stores data onboard for 68 days and exports as CSV
  • Runs up to two years on built-in AAA batteries

Three-pack environmental sensors

This pack contains three SwitchBot W3400010 sensors that measure temperature, humidity, absolute humidity, dew point and VPD. Each unit uses a Swiss Sensirion chip rated at ±1.8% RH and ±0.36°F accuracy with a four-second sampling interval. The IP65 rating makes them suitable for indoor and outdoor locations such as greenhouses, refrigerators or basements. They connect via Bluetooth up to 394ft in open air.

Best for multi-point monitoring

Homeowners who want simultaneous readings from several rooms or zones will benefit from the three-unit bundle and the free on-board storage of 68 days. Gardeners, cigar collectors or instrument owners can place sensors in separate microclimates without buying a hub. Users who need real-time alerts away from home or integration with voice assistants will need a separate SwitchBot Hub, which is not included in this pack.

On-board storage covers weeks

Each sensor stores up to 68 days of readings locally and syncs them to the app when in Bluetooth range. Unlimited cloud history requires adding a hub. The two-year battery life on two AAA cells reduces maintenance, while the compact 77mm x 52mm x 74mm body with lanyard allows flexible placement. Data can be exported as CSV files for deeper analysis.

How it compares

Measured against everything we stock in Sensors, Buzzers & Control Modules, at today’s prices. Recalculated every night.

Price $44.99
Pricier than about 66% of the 89 comparable items (median $29.99).

Specifications

Product
Model nameW3400010
Item nameW3400010 SwitchBot
Product typeMotion Sensor
Size & build
Surface finishBlack
Product weight0.19 kg
Overall size77 mm × 52 mm × 74 mm
More details
Placement and useWall Mount

Questions about this item

Does the sensor need a SwitchBot Hub to record data beyond the on-board limit?

The sensor stores up to 68 days on-board and up to 2 years in the app; unlimited cloud storage requires adding a SwitchBot Hub.

Can the IP65-rated sensor stay outside in rain while paired with an older Bluetooth phone?

IP65 dustproof and waterproof rating allows outdoor use; the 394 ft Bluetooth range works with any compatible Bluetooth device regardless of phone age.

How do I confirm the ±0.36 °F and ±1.8 %RH accuracy after mounting?

Open the SwitchBot app within Bluetooth range to view live readings and exported .csv data showing the 4-second sampling interval.

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