The Federal Signal Informer Tone Alert Receiver (TAR) is a commercial grade radio receiver with a loud speaker output designed specifically for alerting personnel to emergency events. The attractive and durable product can be wall mounted or sit on a desktop and comes with an attached antenna that can be removed if connecting to an outside antenna. The Informer has a built-in battery and charger to provide reliable operation even in the event of an AC power failure. The unit is available in the VHF, UHF, or Lowband frequency ranges and is set for narrowband operation. Up to four separate RF channels may be programmed into the TAR. These channels are easily selected from the built in front panel membrane keypad.