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© Inovonics, 2011 - www.inovonics.com 

3

Note: 

All of the alert LEDs will turn off when the receiver has received the 

transmitter’s registration message, and the point number LED will light for 
two seconds. The registration is not complete until all LEDs turn off and the 
point number lights, indicating the receiver has received the transmitter’s 
registration message. If this does not occur, press 

Reset

 on the transmitter 

again. 

3.4 Factory Config

The factory config option is used to restore the EN4204 to it factory 
defaults.

Caution: 

The factory config will erase all programmed point, output, and 

language information.

To restore the factory configuration defaults to the EN4204:

1.

Hold down the 

Reset

 and 

Advance

 buttons.

2.

With the buttons held down, cycle EN4204 power.

4 Connect Input/Output Cabling

1.

Connect cabling to the tamper output.

• The optional tamper output is a normally open (N/O) output that 

reports receiver case tamper to an external device.

2.

Connect cabling to the jam output.

• The optional jam output is a normally closed (N/C) output that opens 

when noise thresholds on all transmission channels remain above a 
predetermined value for any 30 seconds in any 60 second window. 
The jam output is is set to the follow output type.

3.

Connect cabling to the reset input.

• The optional reset input circuit permits installation of a remote 

momentary normally open (N/O) switch to clear faults, unlatch outputs 
and reset the receiver to a normal state.

4.

Connect cabling to the output terminals.

5.

Close receiver housing.

 Figure 9  

EN4204 Terminals

 Figure 10  

EN4204R Terminals

4.1 Mount the Receiver

Caution: 

Mount the receiver in a location removed from metal. Metal 

objects (duct work, wire mesh screens, boxes) will reduce RF range.

1.

Use the provided anchors and screws to mount the receiver in a 
location accessible for future maintenance.

2.

Perform a walk test, activating each transmitter assigned to the receiver 
and ensuring an appopriate response.

5 Specifications

Housing: 

6.38" x 3.60" x 1.10" (162 mm x 92 mm x 28 mm)

Operating environment: 

32°- 140°F (0°- 60°C), 90% relative humidity, 

non-condensing

Power requirement: 

11 - 14 VDC; 150 mA (EN4204), ~400 mA max 

(EN4204R with all five relays energized)

Current consumption: 

Approx. 135 mA; approx. ~400 mA max (EN4204R 

with all five relays energized)

Output specifications: 

Open collector, drive down to .4V @ 100 mA 

(EN4204); Form C relay 1A @ 28 VDC, 0.5A @ 30 VAC resistive load 
(EN4204R); N/O receiver case tamper contact closure, N/C receiver jam 
output indication.

Input specifications: 

A low is less than .5 V; a high is greater than 2.5 V. 

Reset input: Contact closure, momentary low.

Receiver type: 

Frequency hopping spread spectrum

Number of points/transmitters: 

Four

Number of alarm outputs: 

EN4204: four open collector outputs; 

EN4204R: four Form C relay outputs

Number of fault outputs: 

EN4204: one open collector output; EN4204R: 

one Form C relay outputs

6 Warranty/Disclaimer

Caution: 

Changes or modifications to this unit not expressly approved by 

Inovonics Wireless Corporation may void the installer's authority to operate 
the equipment as well as the product warranty. 

Inovonics Wireless Corporation ("Inovonics") warrants its products 
("Product" or "Products") to conform to its own specifications and to be free 
of defects in materials and workmanship under normal use for a period of 
thirty-six (36) months from the date of manufacture. Within the warranty 
period, Inovonics will repair or replace, at its option, all or any part of the 
warranted Product. Inovonics will not be responsible for dismantling and/or 
reinstallation charges. To exercise the warranty, the User ("User", "Installer" 
or "Consumer") must work directly through their authorized distributor who 
will be given a Return Material Authorization ("RMA") number by Inovonics. 
Details of shipment will be arranged directly through the authorized 
distributor.
This warranty is void in cases of improper installation, misuse, failure to 
follow installation and operating instructions, alteration, accident or 
tampering, and repair by anyone other than Inovonics.
This warranty is exclusive and expressly in lieu of all other warranties, 
obligations or liabilities, whether written, oral, express, or implied. There is 
no warranty by Inovonics that Inovonics product will be merchantable or fit 
for any particular purpose, nor is there any other warranty, expressed or 
implied, except as such is expressly set forth herein.  In no event shall 
Inovonics be liable for an incidental, consequential, indirect, special, or 
exemplary damages, including but not limited to loss of profit, revenue, or 
contract, loss of use, cost of down time, or interruption of business, nor any 
claim made by distributor's customers or any other person or entity. 
This warranty will not be modified or extended. Inovonics does not 
authorize any person to act on its behalf to modify or extend this warranty. 
This warranty will apply only to Inovonics Products. Inovonics will not be 
liable for any direct, incidental, or consequential damage or loss 
whatsoever, caused by the malfunction of Product due to products, 
accessories, or attachments of other manufacturers, including batteries, 
used in conjunction with Inovonics Products. 

Note: 

E-mail [email protected] for a copy of the CE Declaration of 

Conformity.

Vs

Jam output

Ground

T

a

mper out

put

Reset

 input

Caution: Incorrect 
connections may 
cause damage to the 
unit

Output 1

Output 2

Output 3

Output 4

Fault

Vs

Jam

 out

put

Ground

T

a

mper

 out

put

R

e

set input

Caution: Incorrect 
connections may 
cause damage to the 
unit

NC

COM

NO

NC

COM

NO

NC

COM

NO

NC

COM

NO

NC

COM

NO

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