|KTX2||UHF FM Code-Hopping Data Transmitter Module|
|KTX2 Datasheet PDF : 8 Pages |
Duty Cycle requirements
The duty cycle is defined as the ratio, expressed as a percentage, of the maximum transmitter “on” time on
one or more carrier frequencies, relative to a one hour period. Where an acknowledgement message is
required, the additional transmitter “on” time shall be included.
There is a 10% duty cycle restriction on 433.050-434.790 MHz band in most of the EU member states.
The KTX2-433 is a RF module intended to be incorporated into a wide variety of applications and finished
products, Radiometrix has no control over the end use of the KTX2-433.The harmonised band 433.050 to
434.790 MHz as detailed in Annex 1 Band E of CEPT/ERC Recommendation 70-03 (which can be
downloaded at http://www.ero.dk/scripts/docmanag98/dm.dll/QueryDoc?Cat=Recommendation)
has list of countries where Duty Cycle restriction apply.
Module users should, therefore, ensure that they comply with the stated Duty Cycle requirements of the
version of CEPT/ERC Recommendation 70-03 in place at the time of incorporation of the KTX2-433 into
their product. It should be noted that the stated Duty Cycle must not be exceeded otherwise any approval
granted for the KTX2-433 will be invalidated.
Variants and ordering information
The KTX2 is available as a standard version:
The standard frequency is 433.92MHz, for other frequency variants, please contact sales
For all other variants please contact Sales department.
To make a complete code-hopping system:
Suitable Receiver module to use with KTX2:
Suitable Decoder IC for use with RX2A:
Or use a complete relay output board (includes RX2A module) for use with KTX2 modules
(mapping the four KTX2 function lines to four change-over relays)
Radiometrix Ltd, KTX2 Data Sheet
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