Carlon RC4121 Long Range 300 ft. Wireless Door Chime Push Button

SKU RC4121 Category


Long Range Wireless Button. Uses (2) 3-volt lithium batteries (installed).  Use this push button with Carlon (Dimango, Lamson Sessions) wireless door chimes to extend the range to 250 feet.

The RC4121 is a wireless transmitter (doorbell button) by Carlon with a range of up to 250ft.  This is the button used in the long range wireless door chime kit by Carlon, the RC4120.

This button works with all Carlon (Dimango/Thomas & Betts) door chime products.  The standard button from Carlon has a wireless range of up to 150 ft. from transmitter to receiver, and in some cases, may not offer the extended range you need.  In that case, as long as the distance is less than 250 ft., we would recommend this button.  Please note: environmental factors will diminish the operating range of any wireless product.  Each wall the signal has to pass through, will degrade the signal.

Here’s a scenario:  You could use the RC3250 plugin door chime kit which comes with one push button transmitter and one receiver.  Then you decide you want to put a push button at your side door, but the distance to the receiver is 160 ft.  You purchase the RC4121, and use it with your existing system.

  • Long Range Wireless Button
  • Battery operated: 2 x 3V lithium batteries included
  • Up to 250′ operating range from transmitter to receiver.  Building materials will reduce range
  • 32 selectable codes block interference from outside signals or from other wireless devices
  • Set sound on front of button so you can make button A play a selected tune, while button B plays a different tune.  This allows you to distinguish which door the visitor has triggered
  • Compatible with all Thomas & Betts, Carlon wireless chime systems
  • Manufactured by Thomas & Betts, using the Carlon/Dimango brand name
  • One year manufacturer’s warranty



Kit Or Accessory

Wireless Range

Customer Reviews

Based on 8 reviews
Carlin doorbell button

Great long range wireless button, worked right away with our current system!

Excellent product

Very happy with the doorbell and the shipping was quick.


Carlon Compatible Long Range Wireless Door Chime Button


works great

Love the doorbell

I live in a 3-level town home and for some strange reason, the developer didn't include doorbells on the units. Although I have an open floor plan, I wasn't sure if this unit would work given the specs, but I decided to give it a try and it functions perfectly.

With the help of the awesome customer service rep, I paired the doorbell with two of the plug-in chime units. I used a 3M Command strip to attach the doorbell to the door. I put one chime unit on the main level and one upstairs in the bedroom and I can hear the doorbell in every room.

I had searched another popular site for doorbells and they were all too large and clunky. I have a narrow space on the door frame and this one is slim enough to fit - and doesn't detract from the look of the home.

Very happy and wouldn't hesitate to order from them again and would recommend to others.