66251750-EN - V1.0 - 05/06/17
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4000 Series Vandal Resistant Digital GSM - Technical Manual
4000 Series Vandal Resistant Digital GSM Audio Intercom with Proximity
General Information
SOFTWARE REVISION
DATE SOFTWARE VERSION REVISION
02/01/17 DG4.0.0 Launch of the digital GSM (4812, 4812R).
15/05/17 DG4.0.1 Update AT command to include DTMF adjustment feature.
FURTHER READING
Additional programming information using the GSMSK PC software can be found in the following technical manual:
• GSMSK-PC-SOFTWARE-MANUAL-ENUK-V1-2 (or later version)
Additional information regarding connection to mains supply voltage can be found in the following regulations for UK based
customers:
• I.E.E. Wiring Regulations BS7671
For overseas customers please consult the relevant standards of your country.
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