Automatic Igniter

The Automatic Igniter is a machine added by GregTech 6 that automatically ignites Burning Boxes and starts fires.

The Automatic Igniter is powered by Energy Units (EU).

Usage
If a Burning Box containing fuel is placed in front of the Igniter, it will be ignited. Otherwise, if there is air in front of the Igniter and the surrounding blocks would allow a fire to start, a fire will be started. By default, the Igniter is always active; the Redstone Machine Switch cover may be used to only activate the igniter on Redstone signals.

Behavior
The Ignitier behaves as if it has a small EU buffer inside it, and it checks if it can emit a fire every 10 ticks. It can ignite blocks as long as its internal buffer contains at least 1 EU regardless of its tier. Upon emitting a fire its internal buffer empties and it sleeps for 100 ticks (5 seconds). This means it does not need to be supplied with a constant stream of EU with its recommended input voltage (e.g. 16 EU/t for LV igniters). The actual voltage can be lower than that as long as it is no less than the minimum input voltage (e.g. 8 EU/t for LV).

While there are several tiers of Igniters in the game, their ability in starting fires has apparently no differences among tiers. The tooltip mentions their "tool quality" but it currently appears to be unused. However, this does not mean higher tier igniters are useless, because higher voltage means less energy transfer loss.