User Manual of
C20-GSM
Repeaters
2
Chapter 1 Safety Warning
Users must follow the below principles:
1 Repeater should follow system requirement of communication equipment, assure good
groundings and lightning protection.
2 The power supply voltage of repeater should meet the standards of security requirement; any
repeater-operator can operate only after cutting power in advance. Only the professional can
operate electrified.
3 Do not dismantle machine, maintain or displace accessories by yourself, because in this way,
the equipment may be damaged or even get an electric shock.
4 Do not open the repeaer, touch the module of repeater, even not to open the cover of module to
touch the electronic component, the components will be damaged due to electrostatic
5 Please keep away from heating-equipment, because the repeater will dissipate heat when
working. And do not cover repeater with anything that influences heat-dissipation.
