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Quick-Start Guide 

EZIO2X4 Input/Output Controller 

Your EZIO2X4 puts control of loads and monitoring of signals where 
needed, avoiding wiring complications.  The unit has 2 relays to control 
small, DC or AC loads with INSTEON or X10 commands.  Outputs can be 
linked simultaneously or individually to a group command from a controller 
such as a KeypadLinc or ControlLinc and timers can pulse each output from 
1 second to 255 minutes.  Up to 4 external signals such as contact closures 
or analog sensors (0—5VDC) can trigger group commands on their 
opening, closing or changing levels to cause INSTEON events.  Behavior of 
the 4 inputs is programmable with the help of a free Windows-XP utility or 
home automation software.  Two of the inputs are opto-isolated and another 
two are configurable for analog signals such as those from environmental 
(light, temperature, pressure, humidity, etc.) sensors. 

EZIO2X4 has a built-in power line interface and is programmed/controlled 
through the power line.  INSTEON and X10 compatibility means virtually 
unlimited connectivity, including wireless networks and the Internet. 

Installation 

• 

Select a suitable power outlet that is close to the loads and 
sensors to be connected.  Avoid exposure to moisture.  If 
installing outdoors, use only an approved outdoor weather-
proof enclosure. 

• 

Connection of the 
Output Relays:

 

Follow the picture 
on the label and 
note the nomenclature (Rx_A and Rx_B) on the detachable 
terminal barrier connector (shown above) for relays 1 and 2.  
Note that each relay acts as a switch (rated .5A at 30VDC or 
120VAC) to close the circuit to the controlled load.  Con-
nect the loads to be controlled (e.g. valve motors, curtain 
actuators, door lock solenoids, garage door switches, etc.) to 
each pair of relay terminals (i.e. load 1 between R1_A and 
R1B, and load 2 between R2_A and R2_B).  Each relay is 
individually controlled by either direct or group Insteon 
messages, or by X10 commands.  A subsequent section of 
this guide describes how to link an Insteon sender or X10 
controller to each output.  Using Insteon, it is also possible 
to take a “snapshot” of the state of the outputs for single 
command “recollection” of the snapshot as part of a scene. 

• 

Connection of the Inputs:  

Two sets of inputs to your 

EZIO2X4 are available through the same terminal connector 
pictured above and described separately below.  Notice also 
that separate terminals are provided for +5VDC (20 mA. 
maximum) and Ground. 

Opto-Isolated Inputs: 

Inputs I1 and I2 can be used in a 

way that the signal source is totally isolated from the 
EZIO2X4, as may be the requirement for certain alarm 
panel monitoring.  In this case, the input must provide a 
voltage between 3 and 30 VDC, connected between the 
positive (I1+ or I2+) and negative (I1– or I2-) terminals.  If 
isolation is not required, these inputs can easily be con-
nected to “dry” contact closures such as those from external 
relays, proximity detectors or door closure sensors.  In this 
case, connect the positive (I1+ or I2+) terminal to the +5V 

terminal, and the contact closure between the negative (I1- 
or I2-) terminal and the GND terminal.  

I3 and I4 as Digital Inputs: 

As configured by default, in-

puts I3 and I4 can be used to monitor voltage levels that 
have distinct thresholds (0—1VDC for ON, and 3—5VDC 
for OFF.)  These are the levels typically produced by digital 
devices such as a control output from a liquid level detector 
or telephone answering device.  Keep in mind that the de-
vice output can not be of the “dry” type; in other words, the 
output connecting to the EZIO2X4 I3 or I4 inputs must pro-
vide a voltage level required to cause a change that the 
EZIO2X4 can recognize.  If needed, a “pull-up” resistor can 
be connected between the particular input (I3 or I4) and the 
+5VDC terminal.  

In this case, do not exceed the maximum 

20mA current rating of this terminal.

 

I3 and I4 as Analog Inputs: 

A software program such as 

our free utility or a home automation program may be used 
to configure I3 and I4 as inputs that respond to and measure 
the level of voltages between 0 and 5VDC.  Typical uses for 
this type of monitoring could be light, temperature, pres-
sure, humidity, or other slowly and discretely varying lev-
els.  The value of the voltage at each of the inputs is inter-
nally converted to a number between 0 and 1023 (10 bits) 
which can be read via Insteon commands or used to trigger 
alarm conditions.  Alarms are simply events when the 
EZIO2X4 sends a group message to the Insteon network.  
Using this facility, an alarm can be set to send an Insteon 
OFF group command when the voltage on the given input 
goes over a certain level, and an Insteon ON group com-
mand when the voltage falls below a different level.  This 
allows many possibilities for closed-loop control such as for 
maintaining the level of a pool, the temperature in a room, 
the humidity in a greenhouse, etc.   

• 

Plug your EZIO2X4 into an AC outlet.  The LED on its side 
will flash on and off rapidly a few times, then turn on and 
off for about 1 second (indicating successful internal diag-
nostics), and finally glow steadily.  The unit is now ready 
for routine operation or programming. 

1-877-495-0144  

www.simplehomenet.com

  

© 2006 Compacta International, Ltd. 

INSTEON is a  trademark of SmartLabs, Inc. and the  INSTEON networking technology is covered by pending U.S. and foreign patents. 

 

Detachable Terminal 
Block for Connection 
to Inputs and Outputs 

Pass-through 

Outlet 

Set-Button and 
LED 

Version 1.0 2/20/07 
Applies to firmware 1.3 and above 

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