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About SHIELD SOLO (formerly SOLO RED) 
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 solution that fully complies with current fire codes, SHIELD SOLO is an Integrated Public Safety BDA that provides 700/800 MHz Land Mobile Radio (LMR) coverage in buildings up to 238,000 ft². This versatile system is available in Class A and Class B variations and accepts DC power from either the purpose-built SHIELD SOLO Battery Backup Unit (BBU) or a standard third-party BBU device. SOLO RED 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 monitoring environmental changes and performing automatic adjustments, 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 set up 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: CEL-FI ERCES solutions’ groundbreaking uplink (UL) test allows integrators to easily achieve industry-leading talk-out performance by measuring the signal traveling from the installation site to the remote tower via walkie-talkie. Using CEL-FI COMPASS and the CEL-FI WAVE PRO app, installers can test UL gain levels and view real-time analytics to ensure the best possible signal-to-noise ratio.
Built-in Grid Test Functionality: With CEL-FI WAVE PRO and CEL-FI COMPASS, system integrators can test the downlink (DL) gain for the design planning stage and post-install performance evaluation. Export the Full Signal Report as a .csv, which includes key LMR / Operator Network parameters: Operator, RSSI, RSRP, RSRQ, 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 CEL-FI WAVE Portal provides installers and authorized users remote monitoring, managing, and control of CEL-FI ERCES systems from anywhere. In addition to easily adapting CEL-FI 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 CEL-FI solution’s individual components, including real-time high site-to-server antenna monitoring and donor signal quality reports.

SHIELD SOLO Components


  • ERCES Public Safety Solution: 0.5W Emergency Radio Communication System for 700/800 MHz LMR
  • Class A Device: 64 Channels at 12.5 kHz Bandwidth (Software Selectable)
  • Class B Device: 56 Channels at 100 kHz or 150 kHz Bandwidth (Software Selectable)
  • Large Coverage Area: Up to 238,000 ft² for Small-to-Mid Sized Buildings
  • 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 Chipset: 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


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 SHIELD SOLO and System Accessories, including the CEL-FI SHIELD SOLO Remote Annunciator Panel (RA), Emergency Power-Off Switch (EPO), and Active Server Antennas
  • Provides Backup Power for up to 12 or 24 Hours During Power Outages
  • Supports 12V Lead-Acid Batteries
  • Two Alarms Ports for Monitoring of the BBU


SHIELD Remote Annunciator (RA)

The SHIELD Remote Annunciator Panel (RA) provides automatic supervisory signals for malfunctions of CEL-FI 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 EXTEND or SHIELD SOLO installations. The RA also offers real-time component monitoring through the CEL-FI WAVE Portal.

RED RA Data Sheet

SHIELD Emergency Power-Off Switch (EPO)

The SHIELD Emergency Power-Off Switch (EPO) instantaneously shuts down CEL-FI 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 EXTEND or SHIELD SOLO installations.

RED EPO Data Sheet

SHIELD Active Server Antenna (ASA)

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 EXTEND and SHIELD SOLO installations, which provide real-time antenna monitoring capabilities through the WAVE Portal.

RED ASA Data Sheet

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