Safeguard Supply ERA-EXVPRX Wired Doorbell Extender with Portable Receiver

The ERA-EXVPRX wired doorbell extender kit is designed for locations that already have a wired doorbell but need to alert staff who move around the building or work in remote areas. Instead of replacing the existing chime, the kit adds an ERA-EXTX transmitter at the wired chime and pairs it with an ERA-VPRX portable vibrating receiver. When the wired button is pressed, the original chime sounds as usual while the ERA-EXTX sends a wireless signal up to 4,000 feet to the portable receiver.

This configuration is useful for warehouses, shops, and offices where staff may be away from the front counter, as well as larger homes where hearing the wired doorbell everywhere is difficult. The receiver’s combination of sound and vibration provides a clear indication of doorbell activity even in noisy environments or when the user cannot rely on sound alone.

The ERA-EXTX is a compact transmitter that connects to an existing low-voltage wired doorbell chime. It senses when the chime is activated by a button press and converts that event into a wireless signal for ERA receivers. The transmitter is capable of monitoring up to two doorbell inputs, typically labeled front and back on the wired chime, so both buttons can be extended wirelessly if needed.

The transmitter is powered by an internal CR123A lithium battery and is designed to work within the voltage range of typical wired chime circuits. It mounts near the wired chime housing and uses short leads to connect to the chime terminals. The wireless range from the ERA-EXTX to ERA receivers is rated up to 4,000 feet line-of-sight, making it suitable for long distances through typical building structures.

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

• Door support: accepts inputs from one or two wired doorbell buttons (front and back).

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

• Power source: CR123A lithium battery, designed for multi-year service.

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

• Doorbell compatibility: standard low-voltage wired doorbell chimes within the specified voltage range.

Installation begins by removing the cover from the existing wired doorbell chime so the coil or terminal screws are accessible. The ERA-EXTX is wired to these terminals according to the included diagram, with separate connections for the front and back door circuits if both are used. After wiring, the transmitter is mounted securely near the chime using screws or adhesive, keeping the wiring neat and avoiding strain on the connections.

To pair the system, the ERA-VPRX receiver is placed into programming mode and the wired doorbell button is pressed. The existing chime rings in the usual way and the ERA-EXTX sends a signal that the portable receiver learns as a new transmitter. Once pairing is complete and a melody is selected, pressing the wired button will both sound the original chime and cause the ERA-VPRX to alert the user.

• Wiring method: low-voltage connections to the existing chime coil terminals.

• Pairing: press the wired button while the ERA-VPRX is in learn mode to link the transmitter to a melody and alert pattern.

• Verification: trigger each button multiple times to confirm that both the wired chime and portable receiver respond consistently.

The ERA-VPRX is a portable receiver designed for staff who need to move around while still receiving doorbell alerts. It is powered by a rechargeable lithium-ion battery and is supplied with a charging cable and power adapter. On a full charge, the receiver typically provides about six to seven days of standby time, depending on how frequently alerts occur and which modes are used.

The receiver offers three alert modes: sound only, vibration only, or sound and vibration together. It provides four volume settings up to roughly 80 dB at the highest level and supports multiple melodies so different transmitters can be identified by sound. A backlit display and indicator icons show when an alert is received and provide basic status information such as battery level.

• Alert modes: sound only, vibration only, or sound plus vibration.

• Volume: four adjustable levels up to about 80 dB.

• Wireless range: up to 4,000 ft from ERA transmitters in line-of-sight conditions.

• Power: rechargeable lithium-ion battery with included charger.

• Standby time: approximately 6–7 days per charge, usage dependent.

• Transmitter capacity: can pair with up to 16 ERA transmitters, each with its own melody if desired.

• Dimensions: about 4.0" H x 1.5" W x 0.75" D.

• Operating temperature: approximately -30°F to 120°F.

With the ERA-EXVPRX kit installed, a visitor pressing the wired doorbell at the entrance triggers three things at once: the existing mechanical or electronic chime rings as before, the ERA-EXTX sends a wireless signal, and the ERA-VPRX portable receiver activates for the user carrying it. Depending on how the receiver is configured, the alert may consist of a melody, vibration, or a combination of both.

This behavior is particularly helpful in shops, warehouses, and offices where staff may be away from the front counter, as well as in residential settings where a caregiver or homeowner wants doorbell alerts while in another part of the house or outside. Because the receiver is portable, it stays with the user rather than being tied to a fixed location, reducing the chance of missed doorbell calls.

• Alert path: wired doorbell press triggers the original chime and a wireless alert to the portable receiver.

• User experience: vibration and tone options help ensure alerts are noticed even in noisy or quiet environments.

• Mobility: belt clip and compact size make it practical to carry throughout the day.

Both the ERA-EXTX and ERA-VPRX are part of the Safeguard Supply ERA Series. The ERA-EXTX transmitter can be paired with additional ERA receivers beyond the portable unit if needed, such as desktop receivers or plug-in strobe receivers in other parts of the building. Likewise, the ERA-VPRX can be paired with other ERA transmitters, not just the doorbell extender, including push buttons, motion sensors, and driveway sensors.

Because the receiver can learn up to sixteen transmitters, different inputs—such as the front doorbell, a side door, and a motion sensor—can each be assigned different melodies. This allows users to identify the source of an alert by listening to the tone and checking the receiver’s display, without needing separate devices for each input.

• Series: Safeguard Supply ERA long-range wireless family.

• Compatible transmitters: ERA-EXTX plus other ERA push buttons, door contacts, and motion sensors.

• Compatible receivers: ERA-VPRX, as well as other ERA receivers that may be added later.

• Wired doorbell extender kit that adds a long-range portable receiver to an existing doorbell.

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

• Supports two door inputs at the wired chime, typically front and back doorbells.

• Portable receiver alerts with sound, vibration, or both, suitable for staff on the move.

• Rechargeable design with lithium-ion battery and approximately 6–7 days of standby time.

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

• Typical applications: warehouses, retail stores, offices, workshops, and homes where the existing doorbell is hard to hear.

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

• One Safeguard Supply ERA-VPRX portable receiver with rechargeable battery.

• Charging cable and power adapter for the ERA-VPRX receiver.

• Wiring leads and mounting hardware for connecting the ERA-EXTX to the wired chime.

• User documentation for both ERA-EXTX and ERA-VPRX components.

• System type: wired doorbell extender kit with portable vibrating receiver.

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

• Transmitter: ERA-EXTX wired doorbell signal transmitter.

• Receiver: ERA-VPRX portable receiver with sound and vibration.

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

• Doorbell compatibility: traditional low-voltage wired doorbell chimes within the supported voltage range.

• Power – transmitter: CR123A lithium battery.

• Power – receiver: rechargeable lithium-ion battery with included charger.

• Alert modes (receiver): sound only, vibration only, or sound plus vibration.

• Volume: four levels up to approximately 80 dB.

• Transmitter support (receiver): up to 16 ERA transmitters can be paired with unique melodies.

• Receiver dimensions: about 4.0" H x 1.5" W x 0.75" D.

• Operating temperature: approximately -30°F to 120°F.

• Frequency: 433 MHz.