Easydoor - eTEL - Audio telephone with handset

Easydoor audio intercom with handset:
 white plastic/aluminium,
 without display, 
mechanical buttons,
 no memory, 
group call from several monitors in the apartment, 
additional call contact from the apartment door,
 independent control of 2 locks, 
addressing with DIP switches, 
24 V DC power supply from the system bus (twisted pair cable, minimum 2x1 mm), surface mounting,
 dimensions 97 x 187 x 33 mm,
for indoor use