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SwitchBot W4402000 Water Leak Detector

This water leak detector provides real-time notifications via Wi-Fi without requiring a hub, with high sensitivity that detects water as low as 0.5mm. It features a 100dB loud alarm, IP67 waterproof rating, and up to 2 years of battery life. Compatible with voice commands and smart home ecosystems like Amazon Alexa and Google Home, it offers app notifications and works on battery power with alkaline batteries included.
Features
  • Real-time notifications via Wi-Fi without hub
  • High sensitivity detects water as low as 0.5mm
  • 100dB loud alarm for alerts
  • IP67 waterproof and up to 2 years battery life
  • Compatible with voice commands and smart home ecosystems

Product details

General specs

  • Brand: SwitchBot
  • Model: W4402000
  • Color: White
  • Material: Plastic
  • IP Rating: IP67
  • Alarm Type: Sound
  • Sound Level: 100
  • Battery Type: Alkaline
  • Connectivity: Wi-Fi
  • Hub Required: No
  • Power Source: Battery
  • Detection Type: Water Leak
  • Notification Type: App Notification
  • Batteries Included: Yes
  • Smart Home Compatibility: Amazon Alexa, Google Home
Starting from $17.99
Available Options
Water Leak Detector — Water Leak Detection Systems, SwitchBot 3 Sensors Included Amazon $39.99 Available View
Water Leak Detector — Water Leak Detection Systems, SwitchBot 1 Sensor Included Amazon $17.99 Available View

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Color
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Price $17.99 $16.99 $16.49 $25.99 $31.27 $22.99
Seller Amazon Amazon Amazon Amazon Amazon Amazon
Update January 12, 2026 January 12, 2026 December 6, 2025 January 12, 2026 January 12, 2026 January 12, 2026
Material Plastic ABS Plastic Plastic Plastic Plastic
IP Rating IP67 IP67 IP65 IP67
Alarm Type Sound Sound Light, Sound Sound Sound Sound
Dimensions 82, 85, 42 63.5, 25.4, 63.5 83.31, 32.77, 32.77 44.96, 26.42, <num_z> 10, 10, 10
Item Weight 68 68 85 <num1>, <num2> <num1>, <num2>
Sound Level 100 100 100 100, 110 100 120
Battery Type Alkaline Alkaline Alkaline Alkaline Alkaline
Connectivity Wi-Fi Wi-Fi Wi-Fi Wi-Fi Wi-Fi Wi-Fi
Hub Required No No No No No No
Power Source Battery Battery Battery Battery Battery Battery
Detection Type Water Leak Water Leak, Water Level Water Leak Water Leak Water Leak Water Leak
Sensors Included 1 1 1 3 3 2
Notification Type App Notification App Notification App Notification App Notification App Notification App Notification
Batteries Included Yes Yes No Yes Yes Yes
Smart Home Compatibility Amazon Alexa, Google Home Amazon Alexa, Google Home Amazon Alexa, Google Home, Tuya Smart Amazon Alexa, Google Home Amazon Alexa, Google Home Tuya Smart
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