Inovonics Wireless Corporation 3B6OT9HPT User Manual

1.17.13 06431B © Inovonics, 2013 - www.inovonics.com

Installation Instructions

The EN1252 extended range universal transmitter provides five 
times the power of standard Inovonics universal transmitters. To 
support the increased power, the EN1252 can operate using an 
external power source or the internal battery. The unit is 
designed for use with any standard contact or sensor that 
provides a contact closure – normally open or closed – and 
includes connections for two alarm inputs as well as tamper and 
reset.

Note: The EN1252 requires use of a serial receiver or network 
coordinator, as well as an application designed to support 
advanced functionality.

If you have any problems with this procedure, contact Inovonics 
technical services:

• E-mail: support@inovonics.com
• Phone: (800) 782-2709; (303) 939-9336

 Figure 1  EN1252 internal components

• One 3.0V lithium battery, Inovonics part number BAT604
• Three drywall anchors
• Three mounting screws
• Two selection jumpers

• These products are designed to be maintained by 

professional security technicians

• Products are tested for indoor use
• All products should be manually tested weekly

1. Pry the top lip of the mounting bracket up, and lift the bracket 

off of the transmitter.

2. Use your thumb to depress the housing release tab on the 

bottom of the transmitter; separate the housing.

3. Install the battery.

The transmitter has a three-terminal contact block that can 
connect inputs from one or two external contact loops. The 
middle terminal is a ground, which is shared by both contact 
loops. Input one can be configured for either a normally open or 
a normally closed contact loop using the NO/NC selection pins; 
input two is always normally closed. 
4. Connect cabling to input one and/or input two, as desired. 

The N/O-N/C selection pins allow the choice of a normally open 
or normally closed state for the contact circuit wired to the input 
one terminal. The terminal is shipped set for normally closed, 
with no selection jumper on the N/O selections pins. If you need 
the input one terminal set for normally closed, no action is 
needed; skip to 2.5, “Enable/Disable Housing Tamper”.
5. Place a selection jumper on the selection pins to select 

normally open.

The tamper disable selection pins allow the housing tamper to be 
disabled. If you do not wish to disable the tamper, no action is 
needed; skip to 2.6, “Register the EN1252”. If you wish to disable 
the housing tamper:
6. Place a selection jumper on the tamper disable selection pins 

to disable the housing tamper.

7. Press the reset button to complete configuration.

Caution: When pressing the reset button, make sure you don’t 
also touch any selection pins. Touching selection pins while 
pressing the reset button can inadvertently set the EN1252 to an 
undesired configuration.

Transmitters must be registered with the system in order to be 
monitored and supervised. When supervised, the transmitter will 
send a check-in message to the receiver. Transmitters will send 
a check-in message every three minutes. Each transmitter has a 
unique factory-programmed identification number.

Note: Refer to the receiver installation instructions for details 
about registering a transmitter.

8. When prompted by the receiver to reset transmitter, press 

the reset button.

9. Replace the cover.

Caution: The EN1252 should be tested after registration to 
ensure operation. To test the EN1252, activate each of the 
conditions and ensure an appropriate response.

10. Mount the bracket on the wall with the screws provided so 

that the catch is on the bottom.

11. Clip the transmitter onto the bracket. Hook the bottom catch 

first, then press the top into place.

Dimensions: 3.5x1.7x0.9”
Weight: 1.9 oz
Typical battery life: 1 – 2 years (This does not include current 
drawn by external devices)
Internal battery type: 3.0V lithium battery, Inovonics part number 
BAT604
RF output power: 24 dBm (250 milliwatts) equivalent isotropically 
radiated power
Operating environment: Temperature: -4°F to 140°F using 
internal battery (-40°F to 185°F using appropriate external power 
source)
Humidity: Up to 90% (non-condensing)
Market: North America
EchoStream® frequency: 902-928 MHz, Frequency hopping 
spread spectrum
Regulatory compliance: FCC, Industry Canada, RoHS

Note: Specifications and data are subject to change without 
notice.

A Reset button

B Tamper disable selection pins

C Input two terminal

D Ground terminal

E Input one terminal

F NO/NC selection pins

G Housing tamper button