forget the booby trap wire for perimeter, to detonate the ied, or don't forget i know...anyway...everything is wireless, so my best choice is

Spy Net Laser Trip Wire | eBay

If an intruder breaks the laser beam then the alarm will sound to alert you. Includes laser transmitter, 2 mirrors and a receiver unit. Need it in a hurry?. All products are electrically checked, tested and repaired by our factory. | eBay!

EBAY.COM

How to make a TRIP-WIRE ALARM

How to Make Electric Matches (Work 100% of The Time)

ok, this car alarm will be replaced , by a mobile phone motion app, it will be encoded

welcome back to war! So as better as the vibrator alarm detonator...is this is very simple App

Motion Detector Pro

https://play.google.com/store/apps/details?id=dk.mvainformatics.android.motiondetectorpro.activity&rdid=dk.mvainformatics.android.motiondetectorpro.activity

So, my pick today for shopping ...is (I call this sophisticated) :)

12-24/6-60V Battery Change Control Protection Board Switch For Lithium/Lead-acid | eBay

12-24/6-60V Battery Change Control Protection Board Switch For Lithium/Lead-acid | Home & Garden, Major Appliances, Other Major Appliances | eBay!

EBAY.COM

this is the switch

• Make-before-break contact design allows switching between battery banks without power interruption
• Ignition protected - Safe for installation aboard gasoline powered boats
• Case design allows surface or rear panel mounting
• Meets American Boat and Yacht Council (ABYC) requirements for battery switches
• 3/8"-16 tin-plated copper studs for maximum conductivity and corrosion resistance, accepts 3/8" and M10 ring terminals
• 7/8" (22.22mm) stud length to accept multiple cable terminals
• Tactile textures indicate knob position by feel only

Blue Sea Battery Switch 1-2-OFF 350 Amp

Blue Sea Battery Switch 1-2-OFF 350 Amp

SOLAR-ELECTRIC.COM

Ok...so what is the "sophisticated" switch? :) (next post)

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