User's Manual

Sharp 340/380 user manual
3. Installation Instructions
3.1 Precautions
To ensure the normal and stable operation of the device and your personal property and
safety, please carefully read the following notes before install HH340/380 reader.
1. Firstly, check whether the power socket is connected to the ground, and to see whether
the local power supply voltage is in accordance with the applicable voltage range of the
reader;
2. Check the device and the external connection if is closely connected;
3. Pay attention to the type selection and the length limit of the network cable and the
serial cable:
 Network cable connects directly, no longer than 80 meters
 Serial cable connects directly, no longer than 10 meters
4. When installing several readers, the antenna position and the antenna spacing should
be appropriate to avoid interference with each other.