We are offering digital tensioning metering device. Tension type computerized metering device for upper feed only. The main unit, control box and panel are all together as one.Industrial cpu chipset and all new operating system make metering device work more stably and precisely.Smart touch panel displays sensitivity according to changing tension.It can feed six different sensitivities and adjust elastic automatically by setting tension and stitch. With compact figuration, fashion appearance and easy-operation, its the best sewing supplement for underwear manufacturer. Parts description free tape switch this switch prevents elastic tape pulled backwards when the operation stops. Led section display it indicates the current section by led display led display and manual section changing controller this tiny display shows the current section and manual section changing controller allows operator change different section by finger. Synchronizerthe part is fixed in the belt pulley. Its used for stitch counting and section changing. suspended switch for free tape function for overlock and coverstitch sewing machine use only specification product namedigital tensioning device upper type model no.Hde6 memory program6 sections, 26 memory program tension adjusting1999 sensitivity adjusting199 stitch countingblank or 1999 base mounted wayoperation table max speed5500rpm max width65mm power supplyac 220v 50hz standard partsfree tape switch, led section display optional partssynchronizer, led manual section controller, suspended switch