Page 3 Doc no#: 306-0003-002 REV400 Neets 4 relay
Description
The Neets 4 Relay box gives you 4 dry contact relays that each can be controlled by a
control input1(Supported by all Neets Control systems) or by RS-232.
On each of the four relays you have access to both the NO (Normal open contacts) and
the NC (Normal close contacts). This gives you the opportunity to use it according to your
needs.
When using the Neets 4 relay box you have the benefit of selecting what type of voltage you want at
installation time.
The flexibility of the relay box offers you the possibility to control both high voltage and low voltage
application in the same relay box.
When 4 relays are not enough
The Neets relay box gives you the possibility to connect up to 4 boxes together on the same RS-232. When
doing this you get up to 16 relays that are all controllable individually by only one RS-232 port.
All Neets control systems support up to 2 relay boxes on one RS-232 port as it is. If you want more than 2
relay boxes on a RS-232 port, you have to use an active splitter and connect it as shown on page 8.
Safe way to control a screen or lift
The relay box, offers you the possibility to link two relays together and thereby adding extra security when
controlling e.g. screen or projector lift.
When two relays are linked together only one of the relay can be “Set” at a time.
Furthermore, you can define the time from one of the linked relays is “Released” to it is possible to “Set” a
relay again, this time adds additional protection of the connected screen/lift motor.
When using this security feature, it is active whether you control the relay box by the 4 control inputs or by
RS-232.
1“Control inputs” is the name used in this manual for the 4 inputs that allows the Neets control system to
control it directly.
