Applied Wireless KTX433 Users Manual

USER’S MANUAL

Introduction

This 433.92 MHz keyfob type transmitter is used in miscellaneous applications
requiring short-range remote control of on/off functions.

FCC ID: QY4KTX433
INSTRUCTION TO THE USER

FCC ID: QY4KTX433
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:

(1) This device may not cause harmful interference and

(2) This device must accept any interference received, including interference that

may cause undesired operation.

The user is cautioned that changes or modifications not expressly approved by the
party responsible for compliance could void the user’s authority to operate this
equipment.

Transmission Range

The transmission range of this unit depends upon the environment of the signal path,
the type of receiver used and the type of receive antenna used. Using Applied
Wireless RCR433 receiver or RX433 module with a Holtek 6034 decoder and a
quarter wave vertical antenna, line-of -sight range of 300 feet is normal. By using a
quarter wave antenna with ground plane or a dipole antenna will extend the range
even further. Non line-of-site applications can have significantly shorter

transmission range.
Addressing

For security purposes, this transmitter is capable of being programmed to one of
6,561 different addresses. The receiver must be programmed to the same address as
the transmitter. The default address from the factory for both RCR receivers and
KTX series transmitters is 00000000 (all encoder address pins grounded). See
appl ication note AN-104 for alternate programming instructions.

Troubleshooting

?? Verify power by checking transmitter LED when transmitter is operated.
?? Verify address codes for transmitter and receiver are the same.
?? Eliminate RF interference as a possible problem by checking operation at a

different location.

1250 Avenida Acaso, Unit F, Camarillo, CA 93012 ? Phone [phone] ? Fax [phone]

email: [e-mail] ? www.applied-wireless.com

AppliedWireless

+Vcc

HT6044

Application Note AN

-

0104

The following guidelines are provided here
for addressing KTX keychain transmitters
and RCR receivers.

The encoders and decoders used in these
products allow for tri-state addressing. That
is, each of the 8 address nodes may be set in
either ground, +Vcc or open states.

As shipped from the factory, the address
nodes for both products are set to ground,
and it is not necessary to modify these
address for the products to work together.
However, if a different address is desired,
address nodes on both transmitter and
receiver must be set to the same
configuration.

The following describes how to set an
address node to a particular state:

Open State

To configure a node in the open state, the
trace connecting the address node to ground
must be cut.

+Vcc State

To configure a node in the +Vcc state, the
trace connecting the address node to ground
must be cut AND a connection must be
made from the address node to the +Vcc
node. A dab of solder is typically used to
short across the solder bridge.

Ground State

As configured from the factory.

KTX/RCR Addressing

Address Node

Ground

RCR Board

A0………….…A7

Top View

KTX Board

A7…………….….A0

Backside View

1250 Avenida Acaso, Unit F, Camarillo, CA 93012 ? Phone [phone] ? Fax [phone]

email: [e-mail] ? www.applied-wireless.com