ST21 DC Strobe Warning Light

Manufacturer: Tri-Lite Inc

F.O.B. Chicago, Illinois
Dome Colors Available: Amber, Blue, Clear, Green, Purple or Red


The ST21 is a compact strobe warning light excellent for indoor and outdoor signaling, safety or warning applications. Auto-voltage design allows this light to work where input DC voltage is 12VDC-48VDC. Available in permanent mount (pedestal) or magnetic mount (plugs into a vehicle’s DC adapter) models.

  • High output 3-4 Watt - 3.6 joules
  • 70 to 80 flashes per minute
  • 360° Fresnel / fluted lens
  • Low current draw, under 350 mA at 12 VDC
  • 6 1/2" high, 5-1/2" diameter, Shipping Weight, 2 lbs.


2 Models Available for
ST21 DC Strobe Warning Light

*Prices subject to change without notice

Products without prices are not available for purchase through our shopping cart
If you are interested in these products, add them to your quote list by clicking the red button below

Model No. Mounting Voltage Price Ea. Qty
ST21-P Permanent 12-48 VDC $139.70
ST21-M Magnetic 12-48 VDC $146.78