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Flashing ALERT Sign System

AEL/SEL Category 03OE-03-SIGN
Flashing ALERT Sign
The potential for flooding is a common hazard near shorelines and rivers. Shoreline community Long Branch NJ uses several Flashing ALERT Signs (like the one pictured below) to alert motorists to the danger, as they approach low areas that are prone to rising water. Beacons are triggered via UHF/VHF.
Solar panel and electronics are behind the sign panel. Traffic sees the sign panel with embedded LED Beacons.
Flashing ALERT Sign Retrofit Example
See a story of creative sign creation/use in volcanic lahar country.
Related Links

Brochure to Print - pdf

Other Sign Products

Emergency Advisory Radio Product Selection Guide - pdf

Wireless Remote Controlled Solar Powered for Streets & Road with Speed Limits below 60 MPH 
Ultra-visible from more than 1000 feet – even in daytime – Flashing ALERT Signs grab attention with their bright embedded flashing LED beacons. Communities, military bases and industries often use the signs in conjunction with Information Radio Stations to announce urgent message broadcasts. But the signs may also be used independently, e.g., to announce detour routes and emergency actions when beacons activate.

Flashing ALERT Sign Systems may be custom designed for each application with varying power and control methods, sign text, colors and mounting styles and may be installed apart from electrical power services, which keeps installation costs low. 

System operators trigger beacons to flash via one of a number of wireless control methods, e.g. UHF, VHF, paging, SMS/cellular, wireless modem. Bright, amber LEDs command immediate attention when activated. When beacons are off, colored panels display 24/7. 

Flashing ALERT Signs store enough flash-power to run 4 to 10 days even with no sun. With as little as 1.5 average sun hours per day, each sign's backup battery system remains fully charged around the clock. 

Within each sign location, up to four Flashing ALERT Signs may be connected to and controlled by a single Remote Control Power Unit via wire line. For example, two Flashing ALERT Signs could be placed on a busy thoroughfare, one facing each traffic direction; another pair could be placed on two busy streets that intersect that thoroughfare.

Flash patterns and sign colors comply with the Department of Transportation/Federal Highway Administration Manual on Uniform Traffic Control Devices (2004, Regulation 2A.08). (Check with street department and highway authorities to coordinate compliance with local/state regulations governing signs in your area.)
Technical Specifications 
Sign Panel Remote Control & Power Unit Cabinet
  • Typical size: 44” high by 24” wide, customizable (price relates to size).
  • Composition: natural aluminum, standard 1/16” gauge reflective black/ yellow/blue, high intensity prismatic sheeting; customizable black/white, 2” and 3” high lettering.
  • Mount: universal L-bracket for banding, bolting to existing poles or posts.
Sign Electrical
  • LED beacons: 2, amber, weatherproof LED beacons; 41 diodes each; 4.25” diameter embedded reflectors.
  • Current draw: 100 milliamps.
  • Flash controller: 8A, 50/60 fpm, waterproof.
  • Duty cycle: 50% flash.
  • Operation time: 2-4 day flash via solar power without sunlight.
Emergency Use in Avalon, NJ

See the Avalon case study
  • Size: 20” high x 16" wide x 10" deep.
  • Construction: NEMA4X, natural aluminum, single-hinge door, hasp-lock-in closure; weatherproof external antenna connector, wiring, ports.
  • Mounts: external tabs for universal mounting to existing poles or posts.
  • Solar panel: typical 40-watt, 2.40-amp at 12-volt DC, 38.38"x12.13".
  • Solar panel mount: side-of-pole, band or bolt-on.
  • Solar controller: 6-amp current capacity, LED charge indications.
  • Low voltage disconnect circuitry.
  • Battery: 55AH, AGM, sealed type.
  • Capacity: up to 4 flashing signs.
  • Control wiring: #14 AWG, each a maximum of 1000 feet from the controller.
  • Receive frequencies/ranges: 33-50 MHz (VHF low), 150-170 MHz (VHF high) and 450-470 MHz (UHF).
  • Control codes: up to 6 simultaneous codes.
  • Code formats: DTMF (up to 12 digits); 2-tone sequential, single-tone 0.3-3.0 kHz.
  • Programming output: SPDT relay with programmable timer; laptop programming via RS232 port and Windows-based software.
  • Indicators: “ALERT received” LED indicator.
  • Speaker: 4” integral.
  • Test diagnostics: built in with LED indicators.
  • External antenna: 50-ohm BNC connector.
Custom Versions 

Customized Flashing ALERT Signs may retrofit existing warning/evacuation signs to notify drivers when an event is imminent.

Applications include weather emergencies and evacuations. Evacuation signs without flashers tend to blend into local environments, especially for residents and regular commuters, but get noticed with flashers activate during crises.

Control Methods 
Method 3rd-Party Carrier Requires Existing Infrastructure Controls Signs in Subgroups Controls Signs via Web GUI Status Feedback Is Provided Added Hardware Costs
Using DTMF 2-Tone
No Yes, Requires UHF/VHF Coverage at Sign Locations on Available Frequency Yes No No No
Commercial Paging Yes, Flat Monthly No Yes With Additional Software No No
Cellular SMS Yes, per Location No Yes Yes Yes No
LAN or Wireless
Yes, only if 3rd-Party LAN or Wireless Provider Is Used Yes, Network Must Be Accessible at All Sign Locations Yes Yes Yes Yes, if Wireless
Cellular DTMF Yes, per Location No No No No Yes
Email Bill Baker for a formal quote based on your application. An illustrated instruction manual comes with the product. We offer technical support for the life of the product 24/7.  

Sole Source. We frequently are the only source for the products and services we offer and can send you support letters to affirm that for your purchasing documentation.

HGACBuy. If you are a state or local government agency anywhere in the US and you are a HGACBuy cooperative member - or want to join as an end user - you can purchase our products without the necessity of going out to bid. Membership is free to villages, towns, cities, townships, counties, state agencies, departments, authorities, districts, councils or nonprofits doing work for such entities.
Here's how to join.

Competitive Process. If you must seek competitive bids or quotes, we can supply specifications (in text form) so you can easily integrate them into bid documents.

Purchases by governmental entities can be made by purchase order, agency order on letterhead, VISA/MC (up to $3,500) or simply by signing and returning our quote sheets. Standard terms are Net 30 days.

Founding & Firsts Audio Control Methods Alert Stations across America FCC Frequencies & Licenses Site Map
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PO Box 51, Zeeland, Michigan, USA, 49464-0051, Phone 616.772.2300, Fax 616.772.2966, Email Form

The USA's best known source for Emergency Advisory Radio Stations, Travelers' Information Stations, Highway Advisory Radio and related technical services.

 Trademarks: 2X Signal Booster, ALERT AM Emergency Advisory Radio System, ANXX AM Radio Antenna, AP55 Digital Message Player, ENcast Emergency Notification Broadcast System, FAS6000 Flashing Beacons & Controller, FASTrack Quick-Erect Sign, Flashing ALERT Sign System, Free-Radiate On-Premise Radio Broadcast System, HearMoreInfo Internet Broadcasts, HPR0990 High Performance Antenna, i.A.M. Radio Transmitter, Information Station Specialists, InfoRadio Format, Information Station Classic, Information Station IP, InfOSpot License-Free Radio Station, IP8 Digital Message Player, IP76 Digital Message Player, ITS6000 Highway Advisory Radio Network, LIGHTNING LED Portable Changeable Message Sign, NX8R Digital Message Player, Potential Interference Notification Services (PINS), PowerPlane Flex  Factory-Assembled Groundplane, EventCAST Portable Information Radio Service, RadioSAFE Wide Area Emergency Broadcast System, RadioSTAT Portable Emergency Advisory Radio Station, Signal Measurement Radio Receiver, SpotCAST Internet Broadcast Service, Stealth Sign, StreamCAST Internet Broadcast Service, SS3000 Free-Standing AM Radio Antenna System with Tower, Stylized ISS Logo, SX200 Watt Meter, Talking House AM Radio Transmitter, TR6000 Transmitter Model HQ5.0, TR6000 Transmitter Model 15.73, VoiceStar Portable Highway Advisory Radio Station (with or without Changeable Message Sign), VP9000 Vertical Profile Antenna Support and Grounding System, Wireless Audio Link.

Information Radio Stations is a generic term synonymous with Travelers Information Stations (TIS), Highway Advisory Radio Stations (HAR) / Highway Information Systems & Low Power Radio Stations (LPR). Operation of the stations is governed by FCC Part 90.242 Rules. A FCC license is required. Information Radio Stations may be fixed or portable. Subcomponents may include transmitter, antenna and ground system, digital voice player, wateter, cabinet with conventional or Corbin locks, lightning arrestors for RF, power and telephone lines, coaxial cable. Most stations employ black maximized antennas to discourage ice accumulation and security measures to prevent unauthorized program access. Options include synchronization, battery backup, solar power, remote programming by local, network or telco, multi-station audio distribution via RF or LAN / WAN or wireless network.