PA-8171Y-I Temperature Sensored Glue Gun With On/Off Switch 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 an On/Off Switch which is more convenient to apply on artwork project. Enjoy your crafting time with PA-8171Y-I Temperature Sensored Glue Gun!