Speaker

Description
The  plays an alarm sound when powered. When used in conjunction with motion sensors, the speaker can alert the player to movement in the area covered by the motion sensor. The speaker does not seem to attract zombies as of Alpha 18.4 (b4)

When placed in the boundaries of a land claim block, it is possible to pick up the Speaker, but outwith those boundaries the item will be destroyed.

Crafting
Lautsprecher