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4/11/14 05596E_v1 © Inovonics, 2014 - www.inovonics.com

EchoStream® EN1233S/D and EN1235S/D 
Pendant Transmitter

Installation Instructions

1 Overview

1.1 Inovonics Wireless Contact Information

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

• E-mail: [email protected]
• Phone: (800) 782-2709

1.2 Pendant Transmitter Components

 Figure 1  

Pendant Transmitter components

1.3 What’s In The Carton

Individually-packaged products include the following items:

• One belt loop screw
• One selection jumper
• One 3.0V lithium battery

2 Installation and Startup

2.1 Installation Notes

• These products are designed to be maintained by professional 

security technicians

• Products are intended for indoor use
• All products should be manually tested weekly (see “Test the 

Transmitter” on page 2)

2.2 Initial Setup

Install the Battery

1.

Pry the housing apart at either end and pull the two halves 
apart.

2.

Install the battery.

Select the Frequency Band

EchoStream products are able to use a range of radio frequencies, 
and must be configured for your geographic area. This product 
ships with a default frequency range of 902-928 MHz for use in 
North America. If you are using the product in North America, skip 
to “Register the Pendant Transmitter”. If you are using the product 
in Australia or New Zealand, you will need to configure the 
transmitter.

3.

Place a selection jumper on the appropriate frequency band 
selection pins.

• Place the jumper on the bottom pins, marked NZ, to set the 

frequency range to 921-928 MHz for New Zealand.

• Place the jumper on the top two pins, marked AU, to set the 

frequency range to 915-928 MHz for Australia.

4.

Press the reset button to complete configuration.

Caution: 

When pressing the reset button, make sure you don’t also 

touch the frequency band selection pins. Touching the frequency 
band selection pins while pressing the reset button can 
inadvertently set the pendant to the wrong frequency band.

Register the Pendant Transmitter

The pendant transmitter must be registered with the system in order 
to be monitored and supervised. When supervised, the pendant 
transmitter will send a check-in message to the serial receiver or 
network coordinator every three minutes.
Each pendant has a unique factory-programmed identification 
number. Refer to the control panel’s installation instructions for 
details on registering a transmitter.

5.

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

6.

Replace the cover.

Caution: 

The pendant should be tested after registration to ensure 

operation. To test the pendant, activate each of the conditions and 
ensure an appropriate response.

3 Operation

3.1 Using The EN1233 Pendant Chain

Always use the chain included with the ES1233.  Substituting 
stronger cords or chains may result in injury to the wearer.

3.2 Converting the Pendant Transmitter Belt Clip

If you’d like to convert the pendant transmitter belt clip to a belt loop, 
secure the bottom of the belt clip to the housing with a coarse 
thread screw.

 Figure 2  

Use a coarse thread screw to secure the belt clip

A

Reset button

B

Frequency band selection pins

C

Battery

B

A

C

Printing Instructions

1.

Print duplex

2.

Align and orient back page to match front 
page.

3.

Cut on dashed line

4.

Fold cutsheet in half along the 8.5" axis.

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