SKU: IOWC-1553
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KL-CW11 433MHz ASK/OOK RF Receiver Module w/ Antenna

₹125.00 (Inclusive of all taxes)
Out of Stock

The KL-CW11 is a 433.92MHz superheterodyne RF receiver module designed for short-range wireless data links. Operating at 3-5V DC, it receives ASK/OOK modulated signals for decoding by a microcontroller, making it ideal for DIY remote control and automation projects.

Features

  • High-sensitivity superheterodyne receiver with -106 dBm performance for reliable signal capture.
  • Fixed 433.92MHz operating frequency compatible with common 433MHz ASK transmitters.
  • Low 4mA operating current enables battery-powered, energy-efficient wireless nodes.
  • Simple 3-5V DC power supply compatibility for easy integration with 3.3V or 5V logic MCUs.
  • Includes integrated antenna for out-of-the-box testing and deployment in control systems.

Out of stock

Description

The KL-CW11 433MHz RF receiver module implements a superheterodyne architecture for enhanced selectivity and interference rejection compared to simpler super-regenerative designs. This results in more stable performance and reliable data reception in environments with other RF noise sources. The module outputs demodulated digital data via its data pin, requiring an external microcontroller (e.g., Arduino, ESP8266) or a dedicated decoder IC to interpret the transmitted codes.

With its low current draw and wide 3V to 5V operating range, the module is suited for battery-operated remote sensors, wireless switches, and telemetry endpoints. The integrated antenna provides a basic radiating element for prototyping, while the compact 30mm form factor allows for embedding into enclosures for garage door openers, security systems, and smart home actuators.

Key Features

  • Superheterodyne receiver design for improved stability and noise immunity.
  • High RF sensitivity (-106 dBm) extends operational range in line-of-sight conditions.
  • ASK/OOK modulation support for simple, cost-effective digital data transmission.
  • Low power consumption design ideal for always-listening battery-powered applications.
  • Wide 3V to 5V DC input voltage range for compatibility with various logic levels.
  • Integrated wire antenna simplifies initial setup and testing.
  • Direct digital output interface for connection to microcontroller GPIO.

Applications

  • Wireless remote controls for lights, fans, and DIY smart home devices.
  • Garage door opener and automatic gate control systems.
  • Car alarm and vehicle security system receivers.
  • Short-distance telemetry for weather stations or sensor nodes.
  • Wireless doorbells, alarm panels, and simple security systems.

Technical Specifications

Wireless ProtocolASK/OOK
Operating Frequency433.92 MHz (Fixed)
RF Sensitivity-106 dBm
Supply Voltage3V - 5V DC
Operating Current4 mA (Typical)
Modulation TypeASK/OOK
Operating Temperature-10°C to +60°C
Dimensions (LxWxH)30 mm x N/A x N/A

Frequently Asked Questions

How do I connect and use the KL-CW11 receiver with an Arduino?

Connect the module's VCC pin to Arduino 5V, GND to GND, and the DATA pin to a digital input pin (e.g., D2). Use a library like RCswitch or VirtualWire to decode the received ASK/OOK signals. Ensure your 433MHz transmitter uses the same data encoding scheme. The receiver outputs a demodulated digital signal that the library interprets as specific codes for switching or control commands.

What is the typical operational range for this 433MHz receiver module?

Range depends on transmitter power, antenna efficiency, and environment. With a standard 1/4-wave antenna and a 10mW transmitter, expect 20-50 meters in open areas. Walls and obstacles significantly reduce range. For best results, ensure a clear line of sight, use matched antennas on both ends, and avoid sources of electrical noise near the receiver's data line to maintain link reliability.

Can I power this module directly from a 3.3V microcontroller like an ESP32?

Yes, the KL-CW11 operates from 3V to 5V DC, making it compatible with 3.3V logic from ESP32 or STM32 boards. Connect VCC to the MCU's 3.3V pin. The data output pin will also be at 3.3V logic levels, which is safe for the ESP32's GPIO. Ensure your power supply can provide the steady 4mA current. Avoid powering from a GPIO pin; use the board's main 3.3V rail for stable operation.

Package Includes

  • 1 x KL-CW11 433MHz RF Receiver Module (With Antenna)

Additional Information

Weight 0.015 kg
Dimensions 3 × 2 × 2 cm