| Relume Licensed RF System |
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Mesh Network ISM System |
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Power Line Modems |
| Extreme ease of installation uses existing city infrastructure with ‘plug & play’ components |
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Moderately complicated & costly – requires RF survey, possible interfering signals |
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Complicated & costly – requires local data concentrators and web access or a broadband network |
| Intrinsically compatible with LED street lights of all types |
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Will interface with HID lamps with special dimmable ballasts |
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Will interface with HID lamps with special dimmable ballasts |
| Interference immunity – high protected communication link |
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Interference immunity – low shared ISM radio frequencies |
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Interference immunity – moderate power lines are intrinsically noisy |
| Ability to sequentially strobe lamps for evacuation routes |
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Sequential strobing is not possible because of timing issues |
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Sequential strobing is not possible because of timing issues |
| Emergency call button feature implicit in controller functions |
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Emergency call button feature difficult & costly to implement |
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Emergency call button feature difficult & costly to implement |
| Remote emergency key fob is simple to implement at low cost |
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Remote emergency key fob is difficult & costly to implement |
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Remote emergency key fob is impossible or very costly |
