Product Features in BOLD are required.
Color of Lens:
Red 
Amber 
Blue 
Green 
Clear 
Select Voltage option:
120 Vac 
12 / 24 Vdc 
Spare Replacement Flash Tube-Lamp:
Spare Flash tube lamp Add $18.00
Optional External Audible Silence device:
External Audible Silence assembly 120 Vac version--see part # AS-120 for details Add $94.00