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KH3 Series RF Transmitter/Encoder & Receiver/Decoder Modules

KH3 Series RF Transmitter/Encoder & Receiver/Decoder Modules

RF Transmitter and Receiver with Integrated Encoder and Decoder

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  • Description
  • Specifications
  • Downloads
  • Complementary Products
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The KH3 Series modules are ideal for wireless remote control and command applications. The transmitter combines the highly-optimized SAW-based LC Series RF transmitter with the DS Series encoder module. The receiver combines the advanced synthesized LR Series receiver with the DS Series decoder. Both modules are configured to use the Holtek protocol and be backwards compatible with previous generations of the KH Series.

The transmitter module accepts up to eight parallel inputs, allowing direct connection of switches, contacts, or microprocessor control lines. The receiver module provides eight logic-level outputs for connection of devices under control, such as relays, motors, indicators, or microprocessor lines. Together, the modules form a reliable wireless connection capable of operation over distances of up to 914 m (3000 ft). Ten address lines are provided to allow for the creation of unique transmitter / receiver relationships.

The wireless transmitter is capable of generating +9 dBm into a 50 Ω load at 5 V and +4 dBm at 3.3 V. The receiver's advanced synthesized architecture achieves an outstanding typical sensitivity of -112 dBm.

The modules operate in the 3 VDC to 5 VDC range and feature very low power consumption, a wide operational temperature range, adjustable transmitter power, and RSSI output. As with all Linx RF modules, no external RF components are required (except an antenna), which allows rapid integration, even by engineers without previous RF design experience.

The modules are also individually compatible with a complete family of FCC pre-certified OEM products, which include keyfob and handheld transmitters, relay and AC control modules. These RoHS-compliant modules are housed in a tiny SMD package that are well-suited to both prototyping and high-volume production.

Benefits

  • Reduce component count: combined transmitter/ encoder module and receiver/decoder form a complete module solution with only two parts
  • Mix and match products: use the receiver with compatible Linx keyfobs and handheld transmitters
  • Integrate with ease: simple hardware configuration lets you transfer raw data without protocol constraints or the need for user programming
  • Save power: low current consumption compared to competing modules extends battery life
  • Simplify design: modules and antennas are the only RF components you need; no tuning required
  • Streamline production: save time and money with modules that are already tested
  • Avoid accidental conflicts: 1022 addresses help prevent identification mistakes

Ordering

PartDescriptionDocumentationStocking
TXM-315-KH3315 MHz KH3 Series Transmitter/Encoder Module Datasheet
TXM-418-KH3418 MHz KH3 Series Transmitter/Encoder Module Datasheet
TXM-433-KH3433 MHz KH3 Series Transmitter/Encoder Module Datasheet
RXM-315-KH3315 MHz KH3 Series Receiver/Decoder Datasheet
RXM-418-KH3418 MHz KH3 Series Receiver/Decoder Datasheet
RXM-433-KH3433 MHz KH3 Series Receiver/Decoder Datasheet
EVAL-315-KH3315 MHz KH3 Series Basic Evaluation Kit Datasheet
EVAL-418-KH3418 MHz KH3 Series Basic Evaluation Kit Datasheet
EVAL-433-KH3433 MHz KH3 Series Basic Evaluation Kit Datasheet

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Stocking and pricing information based on available distributor data and is for reference only. Visit distributor website for purchasing information.

Get a Quote from Linx

To order, please call +1 (800) 736-6677 or +1 (541) 471-6256 for callers outside the United States.

TXM-315-KH3RXM-315-KH3TXM-418-KH3RXM-418-KH3TXM-433-KH3RXM-433-KH3
RoleTransmitter/EncoderReceiver/DecoderTransmitter/EncoderReceiver/DecoderTransmitter/EncoderReceiver/Decoder
Frequency315MHz315MHz418MHz418MHz433MHz433MHz
TX power3.3V: 4dBm typical 5.0V: 9dBm typical3.3V: 4dBm typical 5.0V: 9dBm typical3.3V: 4dBm typical 5.0V: 9dBm typical
RX sensitivity-112dBm typical-112dBm typical-112dBm typical
InterfaceTransparent serialTransparent serialTransparent serialTransparent serialTransparent serialTransparent serial
Data rate100 – 10,000bps100 – 10,000bps100 – 10,000bps100 – 10,000bps100 – 10,000bps100 – 10,000bps
ModulationOOKOOKOOKOOKOOKOOK
Addresses/keys102210221022102210221022
Operating voltage2.7 – 5.2VDC2.7 – 5.2VDC2.7 – 5.2VDC2.7 – 5.2VDC2.7 – 5.2VDC2.7 – 5.2VDC
Supply current0dBm: 1.5mA typical5.9mA typical0dBm: 1.5mA typical5.9mA typical0dBm: 1.5mA typical5.9mA typical
Power down current1.0µA typical47µA typical1.0µA typical47µA typical1.0µA typical47µA typical
Operating temperature-30 – +70°C-30 – +70°C-30 – +70°C-30 – +70°C-30 – +70°C-30 – +70°C
PackageReflow-compatible SMDReflow-compatible SMDReflow-compatible SMDReflow-compatible SMDReflow-compatible SMDReflow-compatible SMD
ArchitectureSAWSAWSAWSAWSAWSAW

Downloads

Manuals & Datasheets

  • TXM-fff-KH3 Data Guide
  • RXM-fff-KH3 Data Guide
  • EVAL-fff-KH3 User's Guide
  • EVAL-fff-KH3 Quick Start Reference

Application Notes

  • Guide to Wireless Regulations in the United States (FCC Resource Document)
  • RF 101: Information for the RF Challenged (AN-00100)
  • Considerations for Operation within the 260 MHz to 470 MHz Band (AN-00125)
  • Data and Bidirectional Transmissions under Part 15.231 (AN-00128)
  • Modulation Techniques for Low-Cost RF Data Links (AN-00130)
  • The FCC Road: Part 15: From Concept to Approval (AN-00140)
  • Considerations for Sending Data over a Wireless Link (AN-00160)
  • The Basics of Remote Control and Remote Keyless Entry (AN-00320)
  • Antennas: Design, Application and Performance (AN-00500)
  • Understanding Antenna Specifications and Operation (AN-00501)
  • Linx RF Module Identification Guide (AN-21181)

Complementary Products

KH3 Series RF Transmitter/Encoder & Receiver/Decoder Basic Evaluation Kit
KH3 Series RF Transmitter/Encoder & Receiver/Decoder Basic Evaluation Kit
CW Series Antennas
CW Series Antennas
RH Series Reduced-Height Antennas
RH Series Reduced-Height Antennas
uSP Series microSplatch® Antennas
uSP Series microSplatch® Antennas
SP Series Splatch® Antennas
SP Series Splatch® Antennas
RP-SMA Connectors
RP-SMA Connectors
DS Series Remote Control Encoder & Decoder
DS Series Remote Control Encoder & Decoder
LR Series RF Transmitter and Receiver Modules
LR Series RF Transmitter and Receiver Modules
LT Series RF Transceiver Module
LT Series RF Transceiver Module

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Linx Technologies

159 Ort Lane
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Toll Free: 1-800-736-6677
Intl: 1-541-471-6256
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