User manual

MOUNTING OF DOOR UNIT

1. Select a location near your door entrance where the surface is not

too rough. We recommend that you do some polishing to get a plane

surface or otherwise the unit may not be able to mount properly.

It should be noted that the mounting bracket should not be installed

on metal screening surfaces or in the vicinity of other electronic

devices that may reduce the operating range. Using the supplied self-

tap screws, fix the mounting bracket onto the wall.

2. In case there is a 12V DC supply, connect to the terminals marked

at the back of the caller unit. In addition, there are also

terminals marked

and for connecting to an

electric door latch which can be remotely

opened by the handset. Where a

DC supply is available, the

call button

will be

automatically illuminated once

the environment gets dark. This

feature and the electric door latch

opening feature will not operate when

using alkaline batteries so as to keep a

long battery life.

CAUTION: When using a DC supply, in case the electric door latch does

not function, reverse the polarity it is connected to and try again.

The two most common types of electric door latches on the market are

either “always close” or “always open”.

Drilled holes

INSERT PLUGS INTO HOLES

(FOR CONCRETE WALL

ONLY)