make your letterbox truly smart

Never miss your mail again with the H2 Letter box Sensor!

Anyone living on an upper floor or who has to pass through the yard to get to their letterbox will appreciate the Letterbox Sensor: The app notifies you once mail lands in your letterbox. This way, you never miss important letters or packages.
The H2 system is easy to install, incredibly simple to operate, and can always be supplemented with other H2 products.
  • Easy operation:

    Hardly any system is as fast and easy to install as the H2 system. The H2 Letterbox Sensor is ready for use in just a few steps.
  • Never miss important mail again:

    Essentially, the H2 Letterbox Sensor is a mail carrier who rings your doorbell: Once something is placed in your letterbox, you receive a notification on the app. This means you can get to your important mail as quickly as possible, and the package carrier doesn’t have any excuses.
  • Indispensable for company letterboxes:

    Registered mail, appointment letters, requests and quote confirmations — it’s important to be able to respond quickly, especially for small companies. With the Letterbox Sensor, you don’t have to constantly look in your letterbox and you won’t waste any time.
  • Small and practical:

    The H2 Letterbox Sensor fits in every letterbox. With the constant operation, the battery lasts at least 2 years and can be replaced with just a few simple steps.