ERA-EXTX Door Bell Chime Extender


The ERA-EXTX is a small wireless transmitter that wires into the existing wired doorbell in your home.  When your wired doorbell is triggered, this small device sends an instant radio signal to a compatible ERA receiver, up to 4,000 ft. away.  If you have trouble hearing the existing wired door bell in your home, this will help you hear the doorbell throughout your home.  Please note, the ERA-EXTX needs a compatible ERA receiver (sold separately) to work.  If you are interested in a kit that contains the ERA-EXTX and a receiver, please visit the ERA-EXKIT product page.

SKU: ERA-EXTX Category:

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Download user manualGTIN: 719243611378

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Easily Make Your Wired Door Bell Louder with the ERA-EXTX Door Bell Chime Extender.

If you’re like many people, sometimes you miss a visitor at your door because you cannot hear the wired doorbell in your home. This is especially true for the elderly and the hard of hearing. Most wired doorbells have a decibel rating between 65 – 75 dBA and only play a simple ding-dong sound. There is an easy solution: the ERA-EXTX by Safeguard Supply.

By simply wiring the ERA-EXTX into your existing wired doorbell and purchasing a compatible ERA receiver (ERA-DCRX, ERA-RXPG, ERA-VPRX – sold separately), when a visitor pushes the pushbutton outside your home, the wired doorbell will chime as usual. Still, simultaneously the compatible receiver will play a selected chime sound, vibrate, or flash (depending on the model).

How the ERA-EXTX Doorbell Extender Works

The ERA-EXTX is a small transmitter that wires into your existing doorbell. It wires into the front doorbell, second doorbell, and standard terminals of the wired chime in your home. A high-powered lithium battery with 3-year estimated lifetime power it. When your wired doorbell is triggered and plays its standard ding-dong sound, this small transmitter will send a radio signal up to 4,000 ft. away to the ERA-compatible receiver.

A compatible ERA door chime receiver must be used in conjunction with this transmitter for it to work. Once the transmitter (ERA-EXTX) is programmed to the receiver, the receiver can be placed anywhere in your home or business, enabling you to hear the chime sound when a visitor is at your door. Multiple receivers may be placed throughout your home or office. For instance, place a receiver in your kitchen, upstairs bedroom, or basement and never miss a visitor again. Use it with the ERA-VPRX portable receiver, for example, and work outside or in your workshop to give you mobility. As long as the receiver is within a 4,000 ft. range, it will pick up the signal sent from the transmitter.

How the ERA-EXTX is Wired Into Your Doorbell

Most wired doorbells have three screws, typically called terminal screws, under the wired doorbell cover or cabinet. One screw is for the front door, another is for the “second door,” and a third is for the “common” or “transformer.” The ERA-EXTX has three wires, one for the front door, one for the second, and another for the common. Simply follow the included directions to wire the transmitter to the doorbell.

Diagram of the ERA-EXTX Wired Into a Standard Wired Doorbell

ERA-EXTX Mounting Diagram
ERA EXTX Mounting Diagram

ERA-EXTX Features and Specifications

  • ERA-EXTX ships with the transmitter, double-sided mounting tape, high-powered lithium battery, and user manual.
  • The ERA-EXTX works with traditional 4V-24V wired doorbells.
  • Dimensions of transmitter: 1.75” W x 2”H x 0.75” D
  • Each wire is approximately 9” long
  • Typically mounts next to, on top of wired chime, or inside the chime cabinet/cover room permitting.
  • It works with standard wired doorbells that play a “Ding-Dong” sound and two doors (for example, a front and back door).
  • The range of ERA-EXTX transmitter to compatible receiver is up to 4,000 ft, line of sight. Environmental and building materials will decrease the wireless range.
  • Must have compatible ERA receiver, sold separately:
  • The battery in the transmitter is a CR123A, a high-powered lithium battery with a life of 2-3 years.
Weight 0.5 lbs
Dimensions 4 × 1 × 1 in

Customer Reviews

Based on 424 reviews
C.P. (Newark, US)


We're happy to hear that the doorbell is working well so far!


Kudos that it reached farther to the target zone than my existing alarms but short of my hopeful goal. I live in the woods of northern Michigan. The alarm is active at about the 1000 foot mark which is short of the target distance for incoming intruders. For those looking for a clear line of sight alarm this should work for you, but for those living in the woods it has a hard time reaching out through the forest.

Good morning,

The line of sight distance is 4,000 ft. Trees and other objects will interfere with the signal. Also, exterior walls that separate the sensor and the receiver, will also cut down on the signal. This will happen with all wireless products, which is why the ERA product line, at 4,000 ft. tends to work better than other products.

S.C. (Chicago, US)
Simplicity is best!

The original doorbell system with chime was so great and easy to program, we decided to get another receiver for our warehouse. It was so simple to pair with the existing chimes and loud enough to hear back there. We have tried a couple of different options in the past, but due to signal issues and them being more complex, they did not work for us. This system is so basic and easy to use, it just works great for our needs.

Thanks for the great review! We're glad to hear that this receiver was a great choice for your needs - simplicity is best!

B.g. (Dallas, US)

My order was placed via phone call. The sales lady was professional with good product knowledge. I found the products to be well designed, easy to set up and install, at a small business. I would definitely recommend 1800doorbell products.

Thank you for your feedback! We're glad to hear that you're happy with our products and service.

D.W. (Virginia Beach, US)

This ‘driveway’ was a path through about 2000’ trees to house. Alarm works well but sounds for deer as well as cars. :)
Good purchase.

Thank you for your feedback! We're glad to hear that the alarm works well and that you're pleased with the purchase.

J.S. (Severn, US)

Best door bell ever bought!

L.M. (Palestine, US)
Great doorbell!

We purchased this for a rather unorthodox reason. My FIL lives next door and is elderly. So the bell is at our house (over 100 yds away), and the button is at his house. He just pushes the button when he needs us if his phone isn't handy. It's great! We think we need a few more buttons though. It's easy to program/set up, and works like a charm! We definitely recommend it!

S.G. (Troy, US)
Best help in a long time!

I finally have a door bell I can hear and alerts me with lights that the door bell is ringing I usually have to depend on my service dog to alert me. Thank you. I am now going to order two more of the plug in units for to other rooms.

Thank you for your review! We're glad to hear that our ERA-DCKIT Door Bell for Hearing Impaired is providing you with the best help in a long time. We hope that you'll continue to use our product and recommend it to your friends.

Anonymous (Freeburg, US)
Great Product

The door bell system works great. We have 3 of them in the plant and all work perfect. Good company to deal with Thank You

Thank you for your review. We're glad to hear that the doorbell system works great and that you had good experiences with our company.

K.S. (Minneapolis, US)
Good Product, Good Service

Everything works as advertised. I was sceptical that the signal would travel though our warehouse and through concrete block walls, but it did. 1 receiver is 400 feet away and it works fine. Service was good - it shipped right away and I was informed all along the way.

Thank you for your review! We're glad to hear that you're happy with the product and the service. We hope you have a great day!