National Communications
Page 3
PRODUCT DESCRIPTION
Our intelligent and programmable Lock Control unit (
LCU
) is designed to
provide for Telephone Line based DTMF controlled switching of 1 or 2 internal
Dry Relay Contacts, which can be used to control 1 or more external devices.
They are ideal for applications such as Basic Access Control, Lift Control or
the Powering ON, OFF or RESET of One or More Electrical devices.
Model LCU1 - provides for control of 1 Dry Relay contact
Model LCU2 - provides for independent control of 2 Dry Relay contacts
Model LCU3 - provides Auto Answer operation with 2 Dry Relay contacts
The Relay Contacts are rated for 12volts, 1amp.
Our LCU units connect (in Parallel) to ANY Telephone Line and listen and
respond to programmed DTMF Touch Tone commands.
Each LCU has One (LCU1) or Two (LCU2) Dry Relay contacts that can be
independently controlled by DTMF Touch Tone commands from an Incoming
Telephone Call OR they can respond to Any Parallel telephone device
connected to the same line.
Model LCU3 also has Two Dry Relay contacts and this Model can be set to
Answer Incoming calls after a User Programmable number of rings (See page
5 for more details on LCU3).
One or More LCU units can be fitted to the same telephone line to provide
a simple and flexible Access Control or Power Control solution.
Each LCU Relay can be programmed with its own unique DTMF code (from
1-4 digits) and whenever the correct code is entered from Any telephone on
that line, or from an Incoming Telephone Call, the appropriate Relay will close
for a User Programmable period of time (programmable from 1-99 seconds).
LCU units connect to ANY telephone socket on a telephone line. Multiple
units can connect to the same socket, or they can be connected to different
sockets on the same line.
LCU is supplied with a 12VAC power adaptor. 12VDC can alternatively
be used to power LCU if required (min of 200mA)
.