• Patented shock mounted rotators with two sealed roller bearings provide quiet, smooth, and maintenance free operation
• Lock-and-stay bulbs are field replaceable
• Durable polycarbonate plastic outer domes keep our lights corrosion, weather, and impact resistant
• Quick snap lens and a high impact resistant polycarbonate base assembly for quick field repair
• Polycarbonate lens is sealed to the base with a water resistant enhanced O-ring
• Available in steady burn

• Voltage: 12V DC
• Amp Draw: 1 amp @ 12V

See online catalog for Specifications list and Vehicle Mounting Specifications

• 21ZI
• 21ZIM

Key:

I - Incandescent
M - Magnet mount

Replacement Parts:

Lens................................................................330-*1
Bulb (12V DC)...............................................2073-94
Bulb (110-120V AC)......................................2073-15T7DC
Circuit.............................................................181-FI-12
Cig. plug with lighted on/off switch...............176-SW
Magnet kit.......................................................177

 20ZI, 21ZI, 20, 200, 240, 241, 400B, & 450B Strobe Light - Manual

 21ZI Flashing Beacon Model Drawing