DPH - Opening doorphone casing

Front panel of DPH doorphone is fixed by wrench srews M4, included in purchased set. Location of these screws is marked by digit 1, visible on below figures.

Following table explains marking used on figures.

Digit	Significance
1	Screws for fixing front panel
2	Doorphone speaker cover
3	Hole for microphone installed in doorphone
4	Address window
5	Establish call button
6	Mark, informing about RFID card reader

Warning! If in doorphones, which include embedded RFID card reader, you use card with standard credit card dimensions, it is enough to approach this card to 5 - 6cm from doorphone, in parallel to doorphone, bellow speaker so over PCB presented on below figure. If you use small pendants as RFID card, it is recommended to aproach such pendant to 1cm in place where there is mark described as 6 on above figures.

To front panel the PCB board is fixed. It is visible after removing front panel. All elements neccessarily to doorphone installation are accessible and it is not needed to remove PCB from front panel. View of PCB fixed to front panel is presented on following figure: