The Protected Land Tester is a 'Green Torch' that acts as an indicator light, similar to a redstone torch but not putting out any redstone power. If the Protected Land Tester is placed within the protective radius of a Meteor Shield, it will light up. If it is not within a shield's protective radius, it will not light up. The Protected Land Tester cannot be re-used as it is a one-time use, so when you break it, nothing will be dropped.
Crafting[]
2 Protected Land Testers, One Land Tester inside protected land one outside of the protected land with a Kitty Comet in the background