The ceramic PTC therrmistor will help to keep the constant temperature when it heats up to the set temperature.
There's a dial that moves between 100°C-220°C for different use, the speed of the glue flow is different according to the different temperature, and you may need use a small flat-bladed screwdriver spinning on the dial to change the temperature.
1 Diameter of the glue strips should between 10.8mm-11.8mm.If the the applied stick doesn't match,the glue gun may be damaged.
2 The nozzle and the glue are hot when the gun is working, please don't touch it.
3 If the glue gun doesn't work for 15min, please cut off the power source to avoid the melting glue recirculating or damage.
4 It may has the light smoke the first use, it is normal and it will die off 10min later.
5 Please let the bracket stand to cool down the gun for several minutes after use, and don't change the other power cord with it.
6 If the strip is left after use, please don't pull it off,just let it in the gun for the next use.
7 It is normal for some glue flowing out after the few seconds you finish working because of the inertia pressure.
Hot Glue Gun Professional Adjustable Temperature Hot Melt Glue Gun 120 w with 12 Glue Sticks - White Hot Glue Gun Kit for Art Crafts DIY Projects Home Repair Computer Electronics Repair - B071JQ2HRZ