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- Burglary prevention system
- Works along with the door entry system (4+N)
- Siemens TC35i GSM engine
- Connects the intercom to the GSM network
- You will answer your home doorbell wherever you are with your GSM phone
- Allows calls being made to 2 different phone numbers
- 3 programmable relay outputs for home automation functions (open-close gates, doors, turn on/off lights, pumps, control of electrical blinds…)
- 3 programming modes:
.......... Locally DTMF tones
.......... Remotely DTMF tones
.......... Remotely SMS messages
- Fully compliant with EN
- It can also be used as a GSM interface for control panels with MDL-21 (PSTN line detection module) 
MLD- 21 - PSTN line detection module for Doorlink
- 1 line input (GSM)
- 1 line input (by default PSTN; GSM in case of PSTN fault)
- relay output for PSTN fault 
04040039 Doorlink complete (board + power supply + plastic box + 2,5 db antenna)
04040040 Doorlink circuit (board + 2,5 db antenna) 04040055 MDL-21 - PSTN line detection module Leaflet Doorlink Comic Doorlink
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