Specification BTT-2880 :
Measuring range 0-750N
0-120lb
0-77Kg
0-114Seems
Accuracy d± 5%
Belt state indication Low, OK, Hi
Resolution ± 1N ( or1 least significant digit of other units)
Belt width d36mm
Overload alarm 750N
Max. load 850N
Metric/ Imperial
Auto power off
Pc interface RS-232C
Power supply 4× 1.5V AAA( UM-4)
Operating condition 0 ~ 50 , < 85% RH
Dimension 135× 62× 33mm  5.3× 2.4× 1.3inch
Net weight 335g( not including batteries)
Optional Accessories Cable and Software for RS-232 and USB.