Process steps:
At first, guests call the reception desk that he need to active or
lock the in-room safes and then the manager of hotel will input
the corresponding dictate in the PC. These indications will be
transmitted to "Data transceiver" by serial port or net port.

The data processed will be transmitted to mini wireless projector
and then coded and modulated frequency modulation to transmit
to antenna.

The antenna transmits signals, meanwhile, the wireless module
of safes will receive them by a small antenna connected to main
chip. After reconciliated, data will be transmitted to mini-control on
the PCB and then safes start to executive command.

Features:
All the data transmitted will be encrypted and unencrypted by
special technology to avoid other people to head off intentionally.
The whole module has very high reliability and security.

Effect range is wide and the distance that data can transmitted is
very far. If power of emission is amplified, the range can be beyond
30 kilometers, even further.

Adopting whole set installation without debug phase, easy
application.