This series of models are controlled by transistor circuits, featuring simple operation and easy mobility. It is mainly applicable to non-continuous medium and small batch sealing operations, and is particularly suitable for sealing objects that are not easy to move. It is not suitable for long-term use in harsh environments with heavy acidity or alkalinity, high humidity and a lot of dust. This machine is a special type of horizontal sensing model, mainly used for sealing large-diameter special-shaped bottle caps with a lifting handle on the bottle cap surface and a certain gap distance between the bottle cap plane and the sensing film within the above-mentioned diameter range.