Sony Ericsson GR47/GR48 - Manual (Page 13)

2. GR47/GR48 RADIO DEVICES
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LZT 123 7589 R1A
All the user needs to provide, is a computer or micro-controller and the
expertise to use AT commands.
2.5 Precautions
The radio devices are ESD protected up to 4K V contact and 8K V air
discharge. It is recommended that you follow electronic device handling
precautions when working with any electronic device system to ensure no
damage occurs to the host or the radio device. In “Integrating the Radio
Device”, page 16 you will find more information about safety and product
care. Do not exceed the environmental and electrical limits as specified in
“Technical Data”, page 63.