These waxing pens have a buil-in heat sensor and power switch. The temperature can be adjusted with your fingertips, which can save time and improve efficiency in your dental practice. The built-in computer regulates the heat and can store up to four different temperature settings. There are two pens and five types of tips to be used for the various requirements of waxing up. This Wax Master II is pocket sized and only two centimeters thick. It can be installed with very little space.