FACT: The RSHK IR thermometer detects surface temperatures in Fahrenheit. IR stands for Infrared. The thermometer shoots out an infrared beam hitting a surface and relaying the temperature of the surface back to you.
THEORY: In theory when a spirit/ghost starts to manifest, it will draw in heat energy around the area, causing either a cold spot or a hot spot. A cold spot would form because the heat energy is being sucked out of the air, causing the air around the entity to be cold. A hot spot would form because the heat energy is being sucked out of the air and confined to a specific area, causing a hot spot.
HOW TO USE: The first thing you want to do is to get a base reading so you can compare your data later on. Hold the yellow button on the side to take temperature readings. While in the field you want to scan the area looking for any temperature changes. If you get a cold spot or a hot spot then investigate the area. When the investigation is complete make sure to write down your readings in the field report.
RANGE: The temperature range on this meter is unknown.
READINGS: A normal reading is usually a 5-degree difference from your base reading. Typically a paranormal reading has a minimum of a 10-degree increase/decrease from your base reading. If you get a drop in temperature, the drop is called a cold spot. You may also get an increase in temperature, which would then be called a hot spot. Hot spots are rare but they do occur.