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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

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

Part Description Documentation Stocking
TXE-315-KH2 315MHz KH2 Series Transmitter/Encoder Module (End of Life) Datasheet
TXE-418-KH2 418MHz KH2 Series Transmitter/Encoder Module (End of Life) Datasheet
TXE-433-KH2 433MHz KH2 Series Transmitter/Encoder Module (End of Life) Datasheet
RXD-315-KH2 315MHz KH2 Series Receiver/Decoder Module (End of Life) Datasheet
RXD-418-KH2 418MHz KH2 Series Receiver/Decoder Module (End of Life) Datasheet
RXD-433-KH2 433MHz KH2 Series Receiver/Decoder Module (End of Life) Datasheet
EVAL-315-KH2 315MHz KH2 Series Evaluation Kit (End of Life) Datasheet
EVAL-418-KH2 418MHz KH2 Series Evaluation Kit (End of Life) Datasheet
EVAL-433-KH2 433MHz 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-KH2 RXD-315-KH2 TXE-418-KH2 RXD-418-KH2 TXE-433-KH2 RXD-433-KH2
Role Transmitter/Encoder Receiver/Decoder Transmitter/Encoder Receiver/Decoder Transmitter/Encoder Receiver/Decoder
Frequency 315MHz 315MHz 418MHz 418MHz 433MHz 433MHz
TX power 2dBm typical 2dBm typical 2dBm typical
RX sensitivity -112dBm typical -112dBm typical -112dBm typical
Interface Transparent serial Transparent serial Transparent serial
Data rate 100 – 10,000bps 100 – 10,000bps 100 – 10,000bps 100 – 10,000bps 100 – 10,000bps 100 – 10,000bps
Modulation OOK OOK OOK OOK OOK OOK
Addresses/keys 3^10 3^10 3^10 3^10 3^10 3^10
Operating voltage 2.7 – 5.2VDC 2.7 – 5.2VDC 2.7 – 5.2VDC 2.7 – 5.2VDC 2.7 – 5.2VDC 2.7 – 5.2VDC
Supply current 1.5mA typical 5.2mA typical 1.5mA typical 5.2mA typical 1.5mA typical 5.2mA typical
Power down current 1.0µA typical 1.0µA typical 1.0µA typical 1.0µA typical 1.0µA typical 1.0µA typical
Operating temperature -30 – +70°C -30 – +70°C -30 – +70°C -30 – +70°C -30 – +70°C -30 – +70°C
Package Reflow-compatible SMD Reflow-compatible SMD Reflow-compatible SMD Reflow-compatible SMD Reflow-compatible SMD Reflow-compatible SMD
Architecture SAW Synthesized SAW Synthesized SAW Synthesized

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 – 470MHz 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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Merlin, OR, US 97532
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