(Formerly SOLO RED)

0.5W ERCES Public Safety BDA for Small-to-Mid Sized Buildings.

Only available in the US
Cel-Fi SOLO RED Front


Ensuring reliable communication for emergency personnel, the SHIELD SOLO public safety solution is a half-watt emergency radio communication system that delivers best-in-class talk-in and talk-out performance. An ERCES that fully complies with current fire codes, SOLO is an Integrated Public Safety BDA that provides 700/800 MHz Land Mobile Radio (LMR) coverage. This versatile system can be configured as a Class A or Class B device in the field and accepts DC power from either the purpose-built SHIELD SOLO Battery Backup Unit (BBU) or a certified third-party BBU device. SOLO is easy to install, NEMA 4 rated, listed to UL 2524, and compatible with other public safety systems.

Advancing ERCES Public Safety Solutions

No Noise Guarantee

By actively monitoring RF environmental changes and performing adjustments in real time, SHIELD SOLO ensures emergency personnel stay connected in any situation by delivering industry-leading performance with a no noise guarantee.

Automatic Setting of Uplink Transmitted Power

SHIELD SOLO simplifies the optimization of uplink (UL) gain for emergency communication systems by eliminating the need for additional equipment or guessing the calculations. The system calculates path loss automatically, allowing for different values according to network requirements and the option to setup a target range.

Automatic Calculation and Setting of Isolation & Downlink Gain

While isolation is calculated in real-time and automatically set at 20 dB per NFPA 1221, the system allows for different values according to local ordinances. DL gain is automatically adjusted to achieve the required value.

Industry-First Talk-Out Guarantee

Nextivity technology allows integrators to calculate the performance and reliability of the RF signal traveling from the donor antenna to the remote tower using a FRS radio (walkie-talkie) and the WAVE PRO app.

Built-in Grid Test Functionality

With WAVE PRO app and COMPASS XR, system integrators can test the downlink (DL) signal for the design planning stage and post-install performance evaluation. Generate the Full Signal Report which includes key LMR/MNO parameters: Operator, RSSI, DAQ, Frequency, Band, PCI and more. Installers use system operation data to prepare for AHJ walk-through tests.

Built-in End-to-End Remote System Monitoring and Management

The web-based WAVE Portal provides installers and authorized users remote monitoring, managing, and control of  SHIELD ERCES from anywhere. In addition to easily adapting SHIELD systems to local fire codes, the WAVE Portal allows users to customize notification and policy parameters. The intuitive platform also offers advanced performance metrics on individual SHIELD components, including real-time high site-to-server antenna monitoring and donor signal quality reports.

SHIELD SOLO Components


  • 0.5W per band Emergency Responder Communications Enhancement System for 700/800 MHz LMR bands
  • Class A Device: 64 Channels at 12.5 kHz Bandwidth
  • Class B Device: 56 Channels at 100 kHz or 150 kHz Bandwidth
  • Class A / B software selectable unit that can be converted in the field without additional codes or license fees
  • No Noise Guarantee: Automatic Calculation and Setting of Isolation as well as Uplink and Downlink Gain
  • Talk-Out & Grid Testing: Industry-First Uplink and Downlink Tests via Cel-Fi WAVE PRO and COMPASS
  • IntelliBoost Chip: Delivers Unparalleled Real-Time Talk-In & Talk-Out Performance
  • End-to-End System Monitoring: Built-in Remote Monitoring and Management via Cel-Fi WAVE Portal

Model Number:
_ › L41-7EB

Cel-Fi SOLO RED Front

Optional Components

SHIELD SOLO Battery Backup Unit (BBU)

The SHIELD SOLO Battery Backup Unit (BBU) provides constant direct current and battery charging capabilities for SHIELD SOLO ERCES Integrated Public Safety BDA systems.

  • Delivers direct constant current to SHEILD SOLO and system accessories, including the SHIELD Remote Annunciator Panel (RA), Emergency Power-
  • Off Switch (EPO), and Active Server Antennas
  • Provides Backup Power for up to 12 hours during power outages
  • Supports 80Ah / 12V Lead-Acid Batteries
  • Two Alarms Ports for Monitoring of the BBU

Model Number:
_ › L44-00


SHIELD Remote Annunciator (RA)

The SHIELD Remote Annunciator Panel (RA) provides automatic supervisory signals for malfunctions of SHIELD ERCES public safety solutions. In addition to being NEMA 4 rated and complying with NFPA and IFC fire codes, the RA features PoE architecture for quick installation and alarm configuration with SHIELD installations. The RA also offers real-time component monitoring through the WAVE Portal.

Model Number:
_ › F42-10R-100

Cel-FI RED RA Front

SHIELD Emergency Power-Off Switch (EPO)

The SHIELD Emergency Power-Off Switch (EPO) instantaneously shuts down SHIELD ERCES public safety systems from a single point, eliminating the risk of combustion caused by electricity or static. The EPO is designed to prevent inadvertent operation and can be installed in any location designated by the local Authority Having Jurisdiction (AHJ). In addition to being NEMA 4 rated and complying with NFPA and IFC fire codes, the EPO features PoE architecture for a quick installation and configuration with SHIELD installations.

Model Number:
_ › F42-10E-100

Cel-Fi RED EPO Back

SHIELD Active Server Antenna

The SHIELD Active Server Antenna is an active multi-frequency, omni-directional antenna for ERCES public safety solutions that require monitoring capabilities at the component level. In addition to being designed for hard cap and false ceilings, the Active Server Antenna features an N-type female connector and rugged IP20 grade electronics. The component is ideal for SHIELD installations, which provide real-time antenna monitoring capabilities through the WAVE Portal.

Model Number:
_ › A33-10A-100

Cel-Fi Active Server Antenna

Software & Tools

Cel-FI WAVE Portal

WAVE Portal

The WAVE Portal is a cloud-based remote management platform that enables device management and maintenance of SHIELD SOLO systems. The WAVE platform is designed to also work on mobile phones which facilitates ease of use on site.



The Cel-Fi COMPASS RED attachment to the Cel-Fi COMPASS enables installers and integrators to perform Site Surveys that will generate Public Safety Reports (which are required by some states). Some setup is needed in the WAVE Portal before the WAVE PRO app can install the Configuration Packages and Calibrate a QUATRA RED system. The app connects directly to the QUATRA RED MBBU via Bluetooth and can also be used to monitor the Radio Data and view the System Status and Alarms.

Tech Specs

BDA Dimensions
Frequency Range LMR 700 LMR 800
Downlink (MHz) 768–775 851–861
Uplink (MHz) 798–805 806–816
Radio Performance

Technology: P25/Analog
Downlink Output Power: 27 dBm
Uplink Output Power: 26 dBm
Minimum Input level (DL/UL): -100 dBm / -90 dBm
Maximum Input level (DL/UL): -20 dBm / -27 dBm
System maximum gain: 90 dB
Noise Figure at max gain: 5 dB
Return loss: -8 dB
System Group Delay @ 12.5 kHz (usec) (Class A): 28
System Group Delay @ 100 kHz / 150 kHz (usec) (Class B): 15 / 13.6


Consumption @ 12 VDC, 62 W max


Operating temperature: -20 to 50°C / -4 to 122°F
Max surface temperature: 44°C (measured at 30°C ambient) / 111°F (measured @ 86°F ambient)
Relative humidity: 0% to 95% (non-condensing)
Product Ingress Protection (IP) Rating: NEMA 4

External Ports

2x Type-N female connectors (Donor & Server Antennas)
1x 24 pin alarm connector
1x RJ45 connector for connection to the remote annunciator
1x Terminal block for power-off switch and external alarms
1x DC port for connection to the battery backup unit

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