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KH2 Series RF Transmitter/Encoder and Receiver/Decoder Modules

KH2 Series RF Transmitter/Encoder and Receiver/Decoder Modules

Transmitters and Receivers for Digital Data with Integrated Encoders and Decoders

Get a Quote See Data Sheets Ask a Question

This product has reached EOL. Please contact Linx about the KH3 Series, which replaces the KH2 Series.

  • Description
  • Specifications
  • Downloads
  • Complementary Products
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Trigger discrete actions with button presses or contact closures by using KH2 Series transmitter/encoder and receiver/decoder modules. They contain Holtek chips and LR Series RF modules. The KH2 Series provides a low level of security. It lets you send commands from multiple transmitters to distinct receivers in the same vicinity through physical addressing. Use KH2 Series modules together or with compatible Linx components for reliable one-way wireless communication at 315MHz, 418MHz or 433MHz. Compared to 2.4GHz modules, narrowband modules from Linx provide longer range and lower current consumption at a more cost-effective price.

Security

The decoder will only accept transmissions from compatible encoders with addresses that match its own. The KH2 Series allows manual addressing through 10 tri-state pins. Because the address is visible in hardware, the KH2 Series is not as secure as the MS Series and HS Series encoders and decoders, which use digital addressing. Additionally, because the KH2 Series does not use encryption or rolling code, it does not protect against intentional security threats. For protection against intentional threats, consider using the HS Series with separate RF modules.

Benefits

  • Reduce component count: combined transmitter/encoder 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: 310 addresses help prevent identification mistakes

Ordering

PartDescriptionDocumentationStocking
TXE-315-KH2315MHz KH2 Series Transmitter/Encoder Module (End of Life) Datasheet
TXE-418-KH2418MHz KH2 Series Transmitter/Encoder Module (End of Life) Datasheet
TXE-433-KH2433MHz KH2 Series Transmitter/Encoder Module (End of Life) Datasheet
RXD-315-KH2315MHz KH2 Series Receiver/Decoder Module (End of Life) Datasheet
RXD-418-KH2418MHz KH2 Series Receiver/Decoder Module (End of Life) Datasheet
RXD-433-KH2433MHz KH2 Series Receiver/Decoder Module (End of Life) Datasheet
EVAL-315-KH2315MHz KH2 Series Evaluation Kit (End of Life) Datasheet
EVAL-418-KH2418MHz KH2 Series Evaluation Kit (End of Life) Datasheet
EVAL-433-KH2433MHz KH2 Series Evaluation Kit (End of Life) 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.

TXE-315-KH2RXD-315-KH2TXE-418-KH2RXD-418-KH2TXE-433-KH2RXD-433-KH2
RoleTransmitter/EncoderReceiver/DecoderTransmitter/EncoderReceiver/DecoderTransmitter/EncoderReceiver/Decoder
Frequency315MHz315MHz418MHz418MHz433MHz433MHz
TX power2dBm typical2dBm typical2dBm typical
RX sensitivity-112dBm typical-112dBm typical-112dBm typical
InterfaceTransparent serialTransparent serialTransparent serial
Data rate100 – 10,000bps100 – 10,000bps100 – 10,000bps100 – 10,000bps100 – 10,000bps100 – 10,000bps
ModulationOOKOOKOOKOOKOOKOOK
Addresses/keys3^103^103^103^103^103^10
Operating voltage2.7 – 5.2VDC2.7 – 5.2VDC2.7 – 5.2VDC2.7 – 5.2VDC2.7 – 5.2VDC2.7 – 5.2VDC
Supply current1.5mA typical5.2mA typical1.5mA typical5.2mA typical1.5mA typical5.2mA typical
Power down current1.0µA typical1.0µA typical1.0µA typical1.0µA typical1.0µA typical1.0µA 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
ArchitectureSAWSynthesizedSAWSynthesizedSAWSynthesized

Downloads

Manuals & Datasheets

  • TXE-fff-KH2 Data Guide
  • RXD-fff-KH2 Data Guide
  • EVAL-fff-KH2 User's Guide

Application Notes

  • Application Notes 260-470MHz

    • 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)

Notices

  • 2013-12-16: KH2 End of Life / KH3 Introduction

Complementary Products

KH3 Series RF Transmitter/Encoder & Receiver/Decoder Modules
KH3 Series RF Transmitter/Encoder & Receiver/Decoder Modules
KH3 Series RF Transmitter/Encoder & Receiver/Decoder Basic Evaluation Kit
KH3 Series RF Transmitter/Encoder & Receiver/Decoder Basic Evaluation Kit
KH2 Series RF Transmitter/Encoder and Receiver/Decoder Modules Evaluation Kit
KH2 Series RF Transmitter/Encoder and Receiver/Decoder Modules Evaluation Kit
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Toll Free: 1-800-736-6677
Intl: 1-541-471-6256
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