DIGIWEIGH DWP-PC - Manual (Page 9)

4. GETTING STARTED
In order to obtain accurate weighing and total price result, the instrument
must be placed on a strong and level surface horizontally.
Avoid using the instrument in environment where excessive wind flow,
vibration and extreme temperature change exist.
The instrument should be installed from any sources of excessive electrical
noise.
General warning: -
 The instrument is not an explosion proof device.
 The instrument is not a water proof device.
 Do not open the instrument, no user serviceable parts inside.
Always contact your dealer for service.
 The instrument not to be subject to shock, excessive vibration
or extremes of temperature (before or after installation).
4.1 BUILT-IN RECHARGEABLE BATTERY
The instrument is equipped with a built-in rechargeable battery. Before first
time use, recharge it for at least 8 hours to ensure the best battery
performance.
4.2 POWER ADAPTOR
Before plugging in the power adaptor, check and make sure the input
voltage of the adaptor matches with output voltage of the electricity outlet. If
not, contact your dealer immediately.
4.3 CONNECTING OTHER DEVICES
Make sure turn the instrument off before making any connections or
disconnections with external devices.
4.3.1. Connecting with a Computer
RS232 COMPORT ON INSTRUMENT: 2 = RXD; 3 = TXD; 5 = GND