The sensor provides sensitive hand touch control, equipped with 2.5mm external interface, which can be connected to major brand monitors..

6 anti-slip pads are properly distributed on the back, not easy to slip off..

Product size is 275*75*30mm. Only need to install 2 AAA batteries to use. (Please note that the package not include the battery).It is recommended to use 1.2V battery, high voltage battery is easy to damage the internal electronic components.

After-sales Protection : Your satisfaction is our mission.If you have any problems with the product you received, please contact us by email, we will definitely give you a satisfactory solution..

Also be used for game timers, dice timers, time management tools, table timers, timers and training