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ARJ12P
Hardware Manual
Junction box for connecting peripheral devices to a standard line input
The ARJ12P is a junction box for connecting peripheral devices to a standard line input. It enables signal transfer
over long distances over a twisted cable. With its ability to transmit signals over long distances through a twisted
cable, the ARJ12P offers reliable and high-quality performance for various applications. The junction box can be
used in both ways, either audio signal can be sent thru or received from the RJ45 bus connector.
Because the ARJ12P is a passive junction box, the maximum cable run length is dependent on the following
factors: connected input, cable type (shielded or unshielded, CAT rating, etc.), and installation location (next to
power cabling, dimmers, etc.). The unbreakable plastic housing allows easy mounting on Mini DIN rails.
RJ45 bus connector
Ground lift dip switches
3-pin Euro terminal block
output connections
DC input
Connections
RJ45 bus connector
The RJ45 bus connection is used to carry a balanced stereo audio signal and 24V power to the peripheral.
Pin 1 White-Orange L+
Pin 2 Orange L-
Pin 3 White-Green +24V DC
Pin 4 Blue Not used
Pin 5 White-Blue Not used
Pin 6 Green GND
Pin 7 White-Brown R+
Pin 8 Brown R-
DC input
The DC input is used to supply the peripheral input with the required voltage via an external power supply
connection. Please check the specications of the connected unit for power requirements and pay attention to
the polarity markings.
3-pin Euro terminal block output connections
3-pin Euro block connectors are used for the connection of stereo audio signals to a balanced input (e.g. connected
pre-amplier). Please check the input section of the connected device whether it is capable of handling the output
level of the connected peripheral (e.g. +12 dBV).
Left: Signal Right: Signal +
Center: Ground
+
Ground lift dip switches
Ground lift dip switches provide the option to eliminate unwanted hum and buzz by interrupting the ground,
this prevents current from owing through the cable shielding resulting in a clean audio signal.
ARJ12P - Hardware Manual1
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Precautions
READ FOLLOWING INSTRUCTIONS FOR YOUR OWN SAFETY
ALWAYS KEEP THESE INSTRUCTIONS. NEVER THROW THEM AWAY
ALWAYS HANDLE THIS UNIT WITH CARE
HEED ALL WARNINGS
FOLLOW ALL INSTRUCTIONS
NEVER EXPOSE THIS EQUIPMENT TO RAIN, MOISTURE, ANY DRIPPING OR SPLASHING LIQUID. AND NEVER PLACE AN OBJECT
FILLED WITH LIQUID ON TOP OF THIS DEVICE
NO NAKED FLAME SOURCES, SUCH AS LIGHTED CANDLES, SHOULD BE PLACED ON OR NEAR THE APPARATUS
DO NOT STICK ANY OBJECTS THROUGH THE VENTILATION OPENINGS.
DO NOT INSTALL THIS UNIT NEAR ANY HEAT SOURCES SUCH AS RADIATORS OR OTHER APPARATUS THAT PRODUCE HEAT
DO NOT PLACE THIS UNIT IN ENVIRONMENTS WHICH CONTAIN HIGH LEVELS OF DUST, HEAT, MOISTURE OR VIBRATION
THIS UNIT IS DEVELOPED FOR INDOOR USE ONLY. DO NOT USE IT OUTDOORS
ONLY USE ATTACHMENTS & ACCESSORIES SPECIFIED BY THE MANUFACTURER
USE THE APPARATUS ONLY IN MODERATE CLIMATES
CAUTION - SERVICING
This product contains no user serviceable parts. Refer all servicing to qualied service
personnel. Do not perform any servicing (unless you are qualied to)
EC DECLARATION OF CONFORMITY
This product conforms to all the essential requirements and further relevant
specications described in following directives: 2014/30/EU (EMC) & 2014/35/EU (LVD).
WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)
The WEEE marking indicates that this product should not be disposed with regular
household waste at the end of its life cycle. This regulation is created to prevent any
possible harm to the environment or human health.
This product is developed and manufactured with high quality materials and
components which can be recycled and/or reused. Please dispose this product at
your local collection point or recycling centre for electrical and electronic waste. This
will make sure that it will be recycled in an environmentally friendly manner, and will
help to protect the environment in which we all live.
Technical specications
Connectors Balanced audio input & power output 1 x RJ45
Audio output 2 x 3-pin Euro terminal block (3.81 mm pitch)
Power input 1 x 2-pin Euro terminal block (5.08 mm pitch)
Ground lift 2 x 1-way DIP switch
Dimensions (W x D x H) 61 x 48 x 40 mm
Weight 0.043 kg
Mounting Mini DIN rail
Construction Unbreakable plastic housing
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ARJ12P - Hardware Manual
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