Safeguard Supply ERA-EXDCRX Wired Doorbell Extender with ERA-DCRX Receiver

The ERA-EXDCRX wired doorbell extender kit is designed for homes and businesses that already have a wired doorbell but need to hear it in more places. Instead of replacing the existing chime, the kit adds an ERA-EXTX transmitter at the wired chime and an ERA-DCRX receiver in the area where additional notification is required. When the wired button at the door is pressed, the existing chime sounds as it always has and the ERA system simultaneously sends a wireless signal up to 4,000 feet to the receiver.

This approach is useful in multi‑story homes, back offices, garages, and warehouse spaces where the original doorbell is too quiet or too far away. The existing wiring remains in place, and the extender kit overlays a long‑range wireless alert path without requiring a new doorbell transformer or pushing wires to new locations.

The ERA-EXTX is a compact, battery‑powered transmitter that wires into a standard wired doorbell or door chime. It connects across the chime coils for one or two door positions, such as “front” and “back.” When the wired chime is energized by a button press, the ERA-EXTX detects the signal and sends a radio transmission to compatible ERA receivers. The internal battery powers the electronics, so no separate power supply is required beyond the existing doorbell circuitry.

The transmitter is typically mounted near the wired chime unit, using short leads to connect to the chime terminals. It is designed to work with common low‑voltage doorbell systems within the stated voltage range. The unit is not intended for use with video doorbells or systems that do not present a standard low‑voltage chime coil, and documentation notes that it should only be used with conventional wired doorbells.

• Function: converts the activation of a wired doorbell chime into a wireless signal.

• Wireless range: up to 4,000 ft line‑of‑sight to compatible ERA receivers.

• Door support: supports two wired doorbell inputs (typically front and back) and can distinguish them at the receiver.

• Power source: internal battery designed for multi‑year service under normal usage.

• Installation location: mounted near the existing wired chime inside the building.

• Compatibility: intended for traditional low‑voltage wired doorbells; not for use with video doorbells.

During installation, the existing wired doorbell chime cover is removed so the chime terminals are accessible. The ERA-EXTX is wired to the same terminals that feed the chime coils, following the included wiring diagram for single‑door or two‑door setups. After wiring, the transmitter is mounted securely near the chime housing where it is protected from moisture and physical damage.

Once the transmitter is connected, the installer pairs it with the ERA-DCRX receiver by placing the receiver into learn mode and activating the wired doorbell button. The chime rings as usual, and the ERA-EXTX sends a signal that the receiver learns and associates with a specific zone and tone. After pairing, pressing the wired doorbell button will both ring the original chime and trigger the wireless receiver in remote locations.

• Wiring: low‑voltage connections to the existing chime terminals.

• Pairing: trigger the wired doorbell while the ERA-DCRX is in programming mode to link the transmitter to a zone.

• Testing: press each button and confirm that both the original chime and the ERA receiver respond correctly.

The ERA-DCRX receiver in this kit is a four‑zone, long‑range wireless chime unit designed for commercial and residential use. It plugs into a 12V DC adapter and can be placed on a desk, counter, or wall-mounted using keyhole slots on the back. The receiver supports four independent zones, allowing different transmitters or doorbell inputs to be grouped and assigned distinct chime melodies.

The ERA-DCRX offers twelve selectable melodies and four volume levels. At its highest setting, the receiver provides a sound output around 85–90 dB at close range, which is loud enough for many warehouse and shop environments. Volume is controlled with a front‑panel knob so it can be turned up or down based on the ambient noise level.

• Zones: 4 programmable zones with separate indicator lights.

• Melodies: 12 selectable tones; each zone can have its own melody.

• Volume: four adjustable levels, up to approximately 85–90 dB.

• Power: 12V DC plug‑in power adapter.

• Wireless range: up to 4,000 ft line‑of‑sight from compatible ERA transmitters.

• Capacity: can store multiple transmitters across its four zones (commonly up to 12 devices in total).

In addition to playing chimes, the ERA-DCRX includes four 12V DC outputs and one C‑FORM relay contact. Each zone has its own 12V output that can be configured to activate when that zone is triggered. This allows the wired doorbell extender to drive external devices such as strobes, bells, or small sirens within the rated current capacity of the outputs.

The C‑FORM relay provides a set of dry contacts that can be wired into other equipment that requires a contact closure on activation. For example, the relay can trigger a building alarm input, a larger signaling device, or an automation system when the wired doorbell is pressed. The relay can be associated with one or more zones and follows the timing settings selected for the zone output.

• Zone outputs: four 12V DC outputs (one per zone) for low‑voltage accessories.

• Relay contact: one C‑FORM relay (common, normally open, normally closed) for integration with other systems.

• Output timing: selectable activation time per zone, from a few seconds to longer intervals.

• Typical accessories: strobes, horns, warehouse bells, and interface modules.

Once installed, the ERA-EXDCRX kit operates in parallel with the existing wired doorbell. When a visitor presses the wired button outside, the transformer energizes the chime coils and the original chime sounds as it always has. At the same time, the ERA-EXTX transmitter senses the chime voltage and sends a wireless signal to the ERA-DCRX.

The ERA-DCRX receives this signal, identifies the zone associated with the transmitter, and plays the melody chosen for that zone. Indicator lights show which zone was activated, and any configured 12V outputs or relay contacts for that zone operate for the programmed duration. If there are multiple wired buttons (for example, front and back doors), the receiver can play different tones and light different zone indicators for each, making it easy to distinguish which door was pressed.

• Alert path: wired doorbell activation triggers both the existing chime and the ERA-DCRX receiver.

• Multi‑door support: the ERA-EXTX can monitor more than one door input and map each to its own zone and tone.

• Extended coverage: the receiver can be located up to 4,000 ft away, and additional ERA receivers can be added if needed.

Both the ERA-EXTX and ERA-DCRX are part of the Safeguard Supply ERA Series. The ERA-EXTX transmitter can be paired not only with the ERA-DCRX in this kit but also with other ERA receivers, such as plug‑in units or portable receivers, to repeat the doorbell sound in multiple locations. Additional transmitters from the ERA family—such as motion sensors, push buttons, and driveway sensors—can also be learned into the ERA-DCRX, each on its own zone and with its own tone.

This makes the ERA-EXDCRX more than just a range extender; it can serve as a core component in a broader wireless alert system that encompasses wired doorbell events, motion‑based alerts, and other sensors across a property.

• Series: Safeguard Supply ERA long‑range wireless platform.

• Compatible receivers: ERA-DCRX, ERA-RXPG, ERA-VPRX, and other ERA receivers (when added separately).

• Compatible transmitters: ERA-EXTX plus ERA push buttons, motion sensors, and driveway sensors.

• Extends an existing wired doorbell using a compact transmitter and a long‑range wireless receiver.

• Up to 4,000 ft wireless range between ERA-EXTX transmitter and ERA-DCRX receiver in line‑of‑sight conditions.

• Supports one or two wired doorbell buttons, with separate zones and tones available at the receiver.

• Four‑zone receiver with twelve selectable melodies and adjustable volume up to roughly 85–90 dB.

• Four 12V DC outputs and one C‑FORM relay for strobes, bells, and system integration.

• Works alongside the existing chime so the original doorbell continues to operate normally.

• Expandable ERA system that can incorporate additional transmitters and receivers as needs grow.

• One Safeguard Supply ERA-EXTX wired doorbell signal transmitter.

• One Safeguard Supply ERA-DCRX four‑zone wireless chime receiver with 12V outputs and relay.

• 12V DC power adapter for the ERA-DCRX receiver.

• Wiring leads and mounting hardware for the ERA-EXTX as provided by the manufacturer.

• User documentation for both the ERA-EXTX and ERA-DCRX components.

• System type: wired doorbell extender kit with wireless chime receiver.

• Kit model: ERA-EXDCRX (Safeguard Supply ERA Series).

• Transmitter: ERA-EXTX wired doorbell signal transmitter.

• Receiver: ERA-DCRX four‑zone wireless chime receiver.

• Wireless range: up to 4,000 ft line‑of‑sight between transmitter and receiver.

• Doorbell compatibility: traditional low‑voltage wired doorbells; not intended for video doorbells.

• Power – transmitter: internal battery (factory installed).

• Power – receiver: 12V DC plug‑in adapter.

• Zones (receiver): 4 programmable zones.

• Outputs: four 12V DC outputs and one C‑FORM relay contact.

• Melodies: 12 selectable tones.

• Volume: four levels, up to approximately 85–90 dB.

• Frequency: 433 MHz.