Simple, Effective, and Affordable

Finding a straightforward door sensor can be frustrating. Many are either cheaply made or part of larger, unnecessary systems. This 4-sensor, 2-receiver setup delivers exactly what’s needed — a chime when a door opens — without the clutter. It performs reliably, and at its price point, it's a standout option.

Main Drawback: Uncommon Batteries

The biggest inconvenience is the use of a rare battery type. While initial batteries are included, they may not last long. However, quality replacements like Duracell or Energizer extend life significantly, often requiring just an annual change. Mildly annoying, but hardly a deal-breaker.

Minor Design Flaw: Installation Matters

A small design issue exists: the cover slides to access the battery. If installed so that gravity pulls it downward, the unit might detach from heavy door use. To avoid this, it's better to mount the sensor on the door frame, or carefully position it to prevent downward sliding.

Installation Tip: Watch Your Angles

Proper alignment between the sensor and magnet is crucial. Some doors may require minor adjustments, like chiseling out a section of the jamb, to achieve perfect alignment. Planning ahead can save both time and effort.

Sound Options: Amusing Variety

The sound selection is unexpectedly entertaining. Among dozens of tunes are hilarious options like "Für Elise" and lively ragtime songs. Thankfully, there are also several simple chimes for a more conventional experience.

Multiple Door Management

Each door can have its own distinct chime, helping users identify which door has been opened without needing complex systems. It’s a practical touch that enhances daily use.