Grove - High Temperature Sensor

Hi, i have buy this product:
http://www.seeedstudio.com/depot/Grove-High-Temperature-Sensor-p-1810.html?cPath=25_125

and i connect to Arduino MEGA, i open the sample code in the library, but the temperature isn’t right…

i read: 451,00-454,00
can help me?…

thanks and excuse me for bad english

[code]// demo of Grove - High Temperature Sensor
// Thmc -> A5
// RoomTemp -> A4

#include “High_Temp.h”

HighTemp ht(A4, A5);

void setup()
{
Serial.begin(115200);
}

void loop()
{
Serial.println(ht.getThmc());
delay(100);
}[/code]

Now the library has been updated
https://github.com/Seeed-Studio/Grove_HighTemp_Sensor