Door Lock Release Relays - NEC Electra Elite 48/192 Features And Specifications Manual

Door Lock Release Relays

FEATURE
DESCRIPTION
SYSTEM
AVAILABILITY
OPERATING
PROCEDURES
Features and Specifications Manual
The DPH(4)-U10 ETU provides four doorphones and four Door Lock Release
Relays. While a station user is talking to a Doorphone, an Access Code can
be dialed to operate the relay associated with that Doorphone.
The time the door lock release is active depends on the digit code dialed.
Terminal Type:
All Multiline Terminals
Required Components:
DPH(4)-U10 ETU
DP-D-1A Doorphone
While a Multiline Terminal is connected to a Doorphone:
1. Dial a single digit code
release make time.
Note: Make means shorted or closed.
2. Dial a single digit code
again. This step is optional as the relay breaks after some time
anyway (controlled in step 1).
D-16
B I
~ t o control the door-to-lock
A J
o r t o make the relay break
D - 49