Lightning Bolts can be locked into place with a standard lock-out /tag-out lock. The lock will prevent disengagement of the bolt by preventing the compression of the center shaft. Combined with a lanyard, it will prevent rotation of the bolt from the threaded hole too. Currently being used on steam...

Warning Strobes & Lights (Battery Powered) Reduce your unauthorized entries into High Radiation areas by utilizing Radium's Motion Detector System. Warning indicators can be triggered to flash, illuminate, or strobe BEFORE entry. Motion detectors, strobes, and flashing LEDs are battery operated...

This video demonstrates the versatility of these motion detectors. They have been used to identify high radiation areas to switch yard barriers at night.