An emergency vehicle uses a special optical emitter to transmit a signal. The TOMAR STROBESWITCH™ receives this signal, and if the signal format is correct, activates its solid-state output relay. The relay output may be used to control security gates, fire department garage doors, and other devices. Signaling is optical by line of sight, and the TOMAR STROBESWITCH™ can operate indoors or outdoors, in bright sunlight, or in any weather. The unit is not susceptible to radio frequency interference, and uses digital frequency discrimination to reject unwanted signals, such as flashlights, emergency vehicle lighting systems, flashing signs, etc.
* Registered trademark of the GTT Corporation.