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What You'll Need

  • Shelly Door/Window 2
  • Shelly app (iOS/Android)
  • 2.4GHz Wi-Fi network
  • CR123A battery

Step-by-Step Setup

  1. Insert battery: Install CR123A battery
  2. Enter pairing mode: Sensor creates "shellydw2-XXXX" Wi-Fi network
  3. Connect to Shelly AP: Join the sensor's Wi-Fi on your phone
  4. Open browser: Navigate to 192.168.33.1
  5. Configure Wi-Fi: Enter your home network credentials
  6. Or use Shelly app: Add device → Door/Window 2
  7. Mount: Attach sensor to frame, magnet to door
  8. Set up actions: Configure what happens on open/close

Key Features

  • Wi-Fi connected: No hub required
  • Open/close + tilt: Detects both contact and angle
  • Lux sensor: Measures ambient light
  • Temperature sensor: Built-in temperature monitoring
  • Vibration detection: Alerts on vibration/impact
  • Local API: Works with Home Assistant locally

Troubleshooting

  • Battery drain: Wi-Fi uses more power. Check battery regularly
  • Won't connect: Only 2.4GHz Wi-Fi supported
  • Tilt not working: Calibrate tilt in settings
  • Home Assistant: Use Shelly integration for local control
  • Factory reset: Press button while inserting battery