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© 1999 Inovonics 

[email protected] phone: 800.782.2709

 www.inovonics.com

223latch.fm rev 1.01 12/16/99

Intended use: The FA223S-LTH portable  transmitter utilizes Ino-
vonics 900MHz Frequency Agile

®

 technology. The transmitter, 

intended to be installed and serviced by licensed  professionals, 
transmits messages to an Inovonics receiver. Once activated, the 
transmitter “latches” in alarm mode until manually reset.

The FA223S-LTH has a water-resistant housing that protects the 
pendant when worn in the shower, rain, or other environments 
where the pendant may be splashed with water. It is not, how-
ever, designed to be submerged.

To activate the FA223S, press and hold the Transmit Button for at least 
1 second. (Actual minimum activation interval is .700 second.) 

Alarm signals are transmitted multiple times, and are indicated by the 
blinking transmit LED

When the button is released, the FA223S-LTH will complete its alarm 
transmission, then will continue to send alarm signals every 3 seconds 
until the Reset is pushed. It then sends a  restoral signal.

Dimensions:

2.22" x 1.925" x0.725"

Weight:

1.4 oz.
Typical battery life:1 to 2 years

Battery (BAT609):

3.0V lithium Sanyo CR2450
—or—          Renata CR2450N     

(The battery is always supervised.)

1. Open the transmitter housing by removing three phillips-head screws.
2. When prompted by the programming device to plug in the transmitter, 

connect the programming cable to the 3-pin programming header.

3. Press the internal reset button.
4. Disconnect the programming cable.
5. Re-assemble and thoroughly test the transmitter.

NOTE: FA223S-LTH transmitters retain programming data in non-volatile 
memory. They do not require reprogramming after loss of power. Install new 
battery and press either the internal or the external reset button to re-initialize 
the transmitter and restore programming. 

IMPORTANT: The FA223S-LTH should always be programmed for super-
vision.

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Inovonics recommends that pendants always be supervised. 

Pendants should also be tested at least once per week.

Suggested check-in interval:  5 minutes

External contacts:

N/O

Internal contact:

No

EOL resistor:

No

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For information on supervision programming options, request 

Tech Notes TN1025 and TN1032.

The FA223S-LTH can be carried in 3 convienient ways: 

•  Around the neck as a pendant (standard).
•  On a belt with the beltclip attachment (standard). 
•  On the arm with optional wristband accessory (ACC634W).

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 Caution: Neck Cord Safety

WARNING:  The neck cord provided with the  FA223S-LTH  is designed for user 

safety.
Substitution of stronger cords or chains may result in injury to the 
wearer.

External

Transmit LED

Transmit

Button

Reset Button

FA223S-LTH Single-button Pendant Latching Transmitter

Operation

Specifications

 Changing the battery: 
1) Remove 3 screws from the 
back of the housing. 
2) Make sure that the battery is 
inserted with the positive (+) ter-
minal facing the indicated side of 
the holder. 
3) After replacing the battery, 
press the internal reset button to 
reset the transmitter to its most 
recent programming. 
4) Replace back cover and care-
fully re-tighten screws evenly for 
tight seal
5) Thoroughly test the unit before 
returning to service.

Internal 

Reset Button

  

3-pin 

programming 

header

Battery Positive 
Indicator

Changing the battery

Programming

 

Factory Default

 / 

Recommended Programming

Belt Clip

Neck cord Clip

Wrist Band (optional)

(ACC623W)

Recommended method of attaching 

the neck cord to the FA223S

Wearing the FA223S: Neck cord, Belt Clip or Wrist Band 

FA223S-LTH 

Installation
Instructions

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