Under Pressure

Players are in a submarine, a space base, or a military underwater base. There is a narrow corridor between two main rooms. Players are instructed to enter the corridor, shut the door to the first room, and "change the pressure" to enter the second room. The instructions for that should be presented as some old picture guide on the wall. First, the puzzle controller detects that the door was closed through a magnetic sensor in the door frame and a magnet in the door. It starts a sound effect of air being sucked in / water filling up the room). Then, players have to close a pressure valve (Valve sensor) which stops the sound effect. Now, they have to push the big red button (Panic Button sensor) but the door to the second room is still closed. There is another picture guide to check the fuse box if the door doesn't open. The fuse box in the corridor has one loose fuse. When players screw the loose fuse tight, the door opens (an electromagnet releases). Electronics needed: 🧲 Magnetic sensor, 🕵️‍♂️ Valve sensor, ⚠️ Panic Button sensor, 3️⃣ 3 Fuses Box sensor or 9️⃣ 9 Fuses Box sensor, 🧩 Universal puzzle controller (MODE #1 – STATE), 🧲 Electromagnet output set