Huh? What’s that? HQ there’s a Metal Gear Solid Alert Sensor Light! Taito made this awesome replica of the staple MGS icon that pops up on enemy NPCs when they spot you. It’s about 7″ tall, has a soft light and blares out the classic sound effect when it detects movement within a 40º arc in front of it.
Metal Gear Informer says this item will also be a claw machine prize in Japanese arcades. As you can see in the image below there’s also a “?” version.
Go prone and pre-order the MGS V: PP Alert Sensor from NCSX for about $24 (USD). 6/8/15 Update: The Caution Sound Sensor – i.e. the “?” version – is now on NCSX as well, and for the same price.