- High precision A/D conversion with
  readability 1/30000
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- Transmission distance: RS232C30 meters
- Power supply: AC 187-242V,49~51HZ; DC built in rechargeable 6V/4AH
  battery

Optional Features:
- KG/LB switch function
- Auto calculating average function ( For livestock scale)
- Two fixed-value outputs function ( For low speed weighing)

http://www.yaohua.cc/product.asp?parentid=27&id=73&productid=76

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