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Unfortunately, some locations are prone to damage from vandalism. A large
Florida utility actually developed a vandal shield for luminaires. Other
companies offer them as accessories. Like luminaires, photocontrols get
hit too. While there are no specific ANSI or IES standards for projectile
resistance, it is an issue that utilities need to discuss with control
manufacturers. Manufacturers can't make controls 100% bullet proof but
DTL can offer, as an option, materials that may reduce failures from projectile
impact.
3.12 Higher Light Levels
Some urban areas with lots of ambient light use a special control with high
(usually 8 footcandles (86.0 lux)) turn-ON. The City of San Francisco's
Chinatown section has some beautifully renovated/replaced decorative "Dragon
Lights". These are close to storefronts with lighted signs which can
turn street lights OFF, it the controls are set to normal turn-ON and turn-OFF
levels. The city requires that these Dragon Lights will be ON whenever needed.
An 8 footcandle (86.0 lux) turn-ON, close OFF/ON ratio control (with matching
Dragon Red cover) keeps the City, the tourists and the store owners happy.
Other utilities have recently approved special controls with high turn-ON
for specific downtown or casino areas.
Auto sales lots pose a similar ambient light problem. A control with
8 ftc turn ON is recommended. Example: DTL's model DP124-8.0-TM.
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