Reactor Remote Control Block

As its name implies, this machine is used to remotely control a Nuclear Reactor linked to it. Both the small and large reactors work, but the small one works best for it. It displays all the information about the reactor: fuel level in percentage, water level, coolant level, steam level, and core and hull heat.

In 1.7.10, when hooked up to a small reactor, it will provide the current fuel level in percentage (not including depleted rods). However, the large reactor will provide the fuel level as a very large integer that directly correlates to the amount of fuel inside the buffer, not as a percentage.

In 1.12.2, both provide the level as a percentage.

Crafting
The Remote Control Block itself: The Reactor Sensor:

Usage
Right-click on a functioning reactor with a Reactor Remote Sensor (if it's a multiblock/large reactor, right-click a hatch), then insert it in the appropriate slot.

Features 5 alert lights, a button to turn the reactor on and off, a button to toggle automatic shutdown, and an E-shaped button to switch between steam compression levels.

Since it uses a button to turn on a reactor, it can only turn on a small reactor easily. With the large reactor, either your mouse scrollwheel must be used or the inventory hotbar numbers (0-9) must be used to modify the control rods. The scrollwheel only changes the rods by 1% either direction and the numbers only include 0-9, with no button translating to 100% capacity. It also accepts incoming redstone signal to turn on and off, though it will only turn off the multiblock as attempting to turn it on will bring it to 1% capacity, which will just waste fuel without actually producing steam. The alert lights are for the following (in order from left to right):


 * 1) No reactor connected (no valid reactor is either connected or it has melted down)
 * 2) Low water (water level is dangerously low)
 * 3) Low coolant (coolant level is dangerously low)
 * 4) Steam buffer full (steam is not being pulled out, this will not cause harm to the reactor, it just means you're losing power)
 * 5) Core temperature very high (reactor is reaching dangerous temperatures)

The most important feature is the automatic shutdown, which can be compared to an IRL SCRAM system. If either the: water/coolant levels reach a certain point or if the temperature is extremely high, it will automatically turn off the reactor preventing meltdown. This is extremely useful, however, it may prevent the ability to use extreme Schrabidium fuel rod setups which can get to ~900℃, well above what this SCRAM-like system considers safe or even dangerous.

The block will emit a vanilla comparator signal proportional to the reactor's temperature. You can use this to setup some complicated redstone circuit to do various things depending on the temperature of the reactor.