User Manual of W20-GSM Indoor single band selective repeaters
Confidential Page
2
Chapter 1.
Safety Warnning
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 repeater, 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.
