Installation Instructions 

Japanese Quality Audio only Intercom with a surface mount silver outdoor station with 4 buttons that call one of four residences where there is a handset so an occupant may lift it and talk to the visitor like they're on a phone.

Two Gate/Door Buttons 

A lock button on each handset may be used to directly release an electric lock on a pedestrian gate or front door through the same two wires that connect the handset and outdoor station. A second button on each handset can directly open an automatic driveway gate or garage door, although this requires and extra two wires between the handset and the gate/door.

Chime Volume Adjustment

The chime volume can be adjusted on each handset separately for the space its in or muted in case no-one wants to be disturbed.

The Lock Output

The output voltage from the lock output can be used to directly release (unlock) an electric lock that is 16VAC at a maximum 800mA or another lock. Other electric locks can be used with a suitable adaptor or the output can be made to operate an automatic gate ... READ MORE 

Power Requirements 

The handset requires 15-16VAC power, which comes from a transformer either next to the handset or away from the handset with a low voltage power cable run to it. The outdoor station requires no power connected as its power is passed through the 2 wires between the Handset the Outdoor Station along with everything else.

Includes

1 x DA-4DS four button Outside Station. The number of handsets, transformers, an extension chime or electric lock is chose separately. 

Wire Size verses Distance 

Wire Distance is the length of the wire measured between the transformer and the electric Lock. The wire distance between the transformer and DA-1MD Handset must be at least half this distance.

0.6mm dia. to 110m - 0.8mm dia. to 200m - 1.0mm dia. to 310m 

Note: If installing cable in the ground it must be in conduit and be a cable that is rated for use in the ground.  Multi-stranded security cable or figure 8 cable is NOT suitable in the ground it must have a polythene sheath and if the diameter of the cable is less than 0.8mm it must be filled with gel to stop it corroding. 

... more on Installing Low Voltage Cabling

Dimensions 

Wiring Diagram