Carlon DH994 Mechanical Door Alert Entrance Alert

Carlon DH994 Mechanical Door Alert Entrance Alert


Do you have a device that alerts you or your employees when a door is opened?  The DH994 is easy to install, wireless, door alarm product that will generate a tone when the door is opened.   No batteries needed – this chime is completely mechanical.  Improve customer service and security !


Availability: Out of stock SKU: DH994 Download user manual


An ounce of prevention is worth a pound of cure!

This is even more important when dealing with security and customer service.  I continue to be amazed at the lack of security at businesses across America.  Most business, warehouses, retail stores, offices, etc. have some sort of security alarm system for monitoring after-hours, but where most fall short is during normal business hours, there is no mechanism to alert employees when someone opens a door into the facility.

Carlon’s DH994 Mechanical Door Alert is easy to install and easier to maintain.  It does not require wiring or batteries.  A closed door being opened is the perfect moment to alert you when someone enters/exits your building and is the ideal solution for homes, offices,shops and small businesses.

The product is purely mechanical.  The main unit attaches to the door frame and a small circular magnet attaches to the door.  When the door is opened, a small plunger pulls from the magnet until it releases.  This release causes the plunger to strike a small metallic plate inside the main unit, generating the tone sound.

If you don’t have a metal door frame, a metal disc is included so the magnet will attach. Simply mount the disc to the frame to align with the chime magnet and your mechanical door alert system is operational.

  • Easy to install
  • No batteries or wiring required
  • Muting bar silences sound

Additional information





Kit Or Accessory


Wireless Range

Sound at Entry

Sensor Type

Magentic Contact

Customer Reviews

Based on 2 reviews
Office doorbell

Excellent service, no issues! Would use company again

Excellent ervice.

Excellent ervice. Very impressed by the young woman who took the order. Quick delivery and the bell is exactly what we needed.

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