Analog Water Pressure Sensor Range

I purchased the Gravity: Analog Water Pressure Sensor recently and am setting it up with my Pico W. I'm confused on some documentation. The sticker on the sensor says it's output voltage is 0.5-4.5V and it's range is 0-1.6MPa. When looking on the DFRobot wiki page for this sensor, the specifications of the sensor shown on the page says it's range is 0-1.6MPA but the comments in the example code below that shows “Output Voltage: 0.5-4.5VDC (linearly corresponding to 0-1MPa)” The code then shows a correlation of 250 KPa to 1V. This came from a voltage range of 4V (4.5 minus 0.5) and a range of 1MPa which is 1,000kPa. So, 1000/4 = 250kPa per volt. BUT, if the range is really 1.6MPa then I should be using 400kPa per volt, correct? So, what is the range I should be using? 1MPa or 1.6MPa?