Automated Steam Trap

The Automated Steam Trap is a block from the Railcraft mod. This block is an automatic variation of the Manual Steam Trap, emitting Steam directly fed from a Steam Boiler. The Automated Steam Trap consumes 32 buckets of steam per operation, and deals a significant amount of damage to anyone walking through. The difference between the Manual Steam Trap and the Automated Steam Trap is that the Automated version will emit steam if there is an entity moving in front of it, and can be turned off using a redstone signal.

Recipe
Alternatively, you can upgrade your Manual Steam Trap into an Automated Steam Trap