ERA or LRA Doorbell Extender: Which Should I Choose?
ERA extenders reach up to 4,000 ft and work with 5V-28V chimes. LRA extenders reach up to 1,000 ft and work with 9-18V AC chimes.
Updated: October 15, 2026Original publish date: October 15, 2026
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| ERA (ERA-EXKIT) | LRA (LRA-EX1000S, LRA-EX1000) | |
|---|---|---|
| Range, line of sight | Up to 4,000 ft | Up to 1,000 ft |
| Chime voltage | 5V-28V AC/DC | 9-18V AC |
| Receiver in kit | ERA-RXPG plug-in, 12 melodies, strobe | LRA-DCRXS plug-in with strobe (EX1000S); LRA-DCRX-L on three C batteries, 18 melodies (EX1000) |
| Doors | Front and back | Front and back |
| Transmitter battery | CR123A lithium | CR123A lithium |
How to decide
- Check your chime voltage first. If it is outside 9-18V AC, the LRA extender will not work; the ERA-EXTX covers 5V-28V AC/DC.
- Choose ERA for large homes, detached garages, shops and warehouses, or when the signal has to cross brick or several walls. Building materials cut range for both, so the extra distance helps.
- Choose LRA for most single-family homes where 1,000 ft line of sight is plenty.
- Stay in one series. ERA receivers work with other ERA sensors (driveway, motion, door contact); LRA receivers work with LRA transmitters.
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What Does a Doorbell Extender Do?A doorbell extender wires into your existing wired chime and sends a signal to wireless receivers in other rooms, so you can hear the doorbell anywhere.Will a Doorbell Extender Work With My Doorbell?Extenders work with standard wired chimes that play a ding-dong sound. They do not work with video doorbells, intercoms or alarm systems.How Do I Install a Doorbell Extender Transmitter?Connect the extender's three wires to the Front, Back and Trans screws inside your wired chime, mount the transmitter, then pair it.Can I Add More Receivers or a Strobe to a Doorbell Extender?Yes. ERA and LRA extenders work with as many receivers as you need, and the plug-in receivers can flash a strobe with or without sound.What Battery Does a Doorbell Extender Transmitter Use?ERA and LRA extender transmitters each use one CR123A lithium battery, included, which lasts years. Plug-in receivers need no battery.