Testimonial:
“We’ve had very little bad weather here which is quite unusual. We’ve only had 2 thunderstorms since July. The few times when there were storms out there, the unit has worked great!”
US Coast Guard, Connecticut  
Lightning Safety Tip:
kids lightning safety page
warranty
ThunderBolt® U1
The Standard ThunderBolt® Portable Storm & Lightning Detector Utility. Available in 2 Great Packages!
The Standard U1package and the U1 yellow lightning detector
U1 Expedition package
The ThunderBolt® U1 portable hand-held storm & lightning detector industrial/utility package comes complete with a full range of accessories that allows for maximum flexibility in use and installation.

To see who uses ThunderBolt® CLICK HERE »
To Download a TBI Product Brochure Click Here »
ranger package lightning detector
U1 Standard Package,
MSRP $619.95  
SALE PRICE $559.95
Mile/KM Conversion Chart free upon request. Mile/KM Conversion Switch* add $50 per unit


U1 Standard Package
Includes:
ThunderBolt® Storm & Lightning Detector U1
Choice of Yellow (TB-U1), Black (TB-U1BK) or Safety Red (TB-U1R).
    PLUS:
  • Custom fitted, hard sided, field carrying case
  • Choice of black MOLLE Field Carry Pouch (6.5" by 4.5" and is 2" wide (expands to 4" wide) or Desk Stand
  • 110-volt AC power adapter
  • 9-volt Duracell® PROCELL® Battery
  • Instruction Manual

For Accessory Details CLICK HERE »
For a Product Comparison Chart CLICK HERE »
Download a SPEC Sheet or Instruction Manual CLICK HERE »
xtreme package image
U1 Expedition Package,
MSRP $1069.95  
SALE PRICE $964.95
Mile/KM Conversion Chart free upon request. Mile/KM Conversion Switch* add $50 per unit

U1 Expedition Package
Includes:
ThunderBolt® Storm & Lightning Detector U1
Choice of Yellow (TB-EXYW) OR Black (TB-EXBK).
    PLUS:
  • Yellow, waterproof lockable Pelican™ carrying case
  • aquapac® waterproof case
  • Black MOLLE Field Carry Pouch (6.5" by 4.5" and is 2" wide (expands to 4" wide)
  • Desk Stand
  • 110-volt AC power adapter
  • Rechargeable Extended Service Lithium Ion Battery Pack
  • 12-volt DC car power adapter
  • 3-9V Duracell® PROCELL® batteries
  • High-brightness NEMO™ waterproof LED flashlight
  • Instruction Manual
For Accessory Details CLICK HERE »
For a Product Comparison Chart CLICK HERE »
Download a SPEC Sheet or Instruction Manual CLICK HERE »




conversion chartconversion switchAvailable in either imperial units (miles) with a free MILES/KM conversion chart upon request
or with a MILES/KM Manual Conversion Switch*.
*Manual Conversion Switch: Modified versions of the current ThunderBolt Storm & Lightning Detector which include a manual calibration selection switch on the back of the unit above the battery compartment (see image). This switch allows the user to select either miles or KM as the calibration in the unit (Note: the calibration will change the numbers being displayed but not remove the miles designation).