DIP switch 2 is used for switching between different ring detection modes. In the OFF position, the relay and
switched 12VDC output will activate only while ring voltage is present and will turn off between rings. In the ON
position, the relay and switched 12VDC output will remain on for up to 5.75 seconds after the ringing has stopped.
This allows the relay and 12VDC (flashing strobe light) to remain on between rings of a standard ring cadence.
Note: To use the Ring Cadence Mode, ring detection MUST be enabled (DIP switch 1 - ON).
C. Ring Cadence Mode
With DIP switch 4 OFF, normally open and normally closed dry relay contacts are available on the orange, purple
and yellow wires. The contacts are rated at .5A @ 125VAC/1A @ 30VDC. If contacts are driving an inductive
load, place a suppression device at the load to snub high voltage spikes.
With DIP switch 4 ON, wet/switched +12VDC (100mA maximum) will be output on the yellow wire and “-” (GND)
on the black wire.
D. Auxiliary Relay Contacts
The switched 12V DC output is a low current, 12-15VDC output that is turned on only while the trigger input is
closed or ring/loop detect relay is activated. This switched power output is ideal for triggering the included strobe
light or providing 12-15V DC power to any device that draws less than 400mAmps. The positive side is available
on the green wire, and the negative side is on the black wire. Once all the line and load connections have been
made, plug in the 115 V AC wall adapter, and replace the cover.
E. Switched 12V DC Output
By connecting the Disable/Info Switch input of the BLK-4 control module to the “Info” switch of Viking’s E-1600-
20A, E-1600-20A-EWP, E-1600-52A or E-1600-52A-EWP Emergency Phone, any outbound call initiated from
the “Info” button will not activate the strobe light. This way, only the “Help/Emergency” outbound calls will activate
the relay. Cut one of the “Info” switch wires in half and connect each end to the blue wires on the BLK-4 control
module as shown in the diagram at the right. Note: This Disable input is NOT polarity sensitive. The “Disable”
input can be connected to a switch for remotely disabling/turning off the device (strobe light, camera, etc.) con-
trolled by the BLK-4 control modile. For more information, see DOD# 866.
F. Disable Feature
The trigger input is available on the two white wires. The Strobe Light, Auxiliary relay contact and the switched 12
VDC output will be activated for the duration of the contact closure across the two white wires.
G. Trigger Input
Viking Electronics, Inc. (715)386-8861
(4 pages)
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