PA-8171DY Dual Temp. Temperature Sensored Glue Gun is the latest model from YC. It's a patented glue gun with unique design. When its temperature reaches 105°C ~110°C (221°F~230°F), the black icon will slowly transfer into color pink. After the icon is completely transferred, you can start using the glue gun. This model features a High /Low switch so that crafters will be able to adjust temperature for applying on different surface. Enjoy your crafting time with PA-8171DY Dual Temp. Temperature Sensored Glue Gun!