HT12E Encoder & HT12D Decoder Module – Wireless Remote Control Pair for 433MHz RF Modules
The HT12E Encoder and HT12D Decoder Module pair is designed for simple wireless control systems. Commonly used in remote-controlled systems, home automation, and security applications, this module pair enables reliable one-way communication of 4-bit parallel data over RF using 433 MHz RF modules (like FS1000A).
 
The HT12E Encoder converts 4-bit parallel input data and address bits into a serial signal, which is transmitted wirelessly. The HT12D Decoder receives the serial data, verifies the address, and converts it back to parallel form, triggering output signals.
 
Key Features:
Compatible with 433 MHz RF Modules
Designed to work with RF transmitters/receivers like FS1000A.
4-bit Data Transmission
Supports 4-bit parallel data with 8-bit address for device matching.
Low Power CMOS Technology
Efficient and suitable for battery-powered remote systems.
Multiple Addressing Options
8 address bits allow up to 256 combinations for secure communication.
Reliable & Secure Communication
Valid transmission requires matched addresses between encoder and decoder.
Wide Operating Voltage
Operates from 2.4V to 12V, compatible with 5V microcontrollers like Arduino.
 
Applications:
Wireless remote control switches
Home automation systems
Car and garage door remote controls
Security and alarm systems
Data transmission for basic robotics
DIY wireless keypads and relays
 
Package Includes:
1 x HT12E Encoder Module
1 x HT12D Decoder Module
 
Specifications:
 
HT12E Encoder Module:
Operating Voltage: 2.4V – 12V
Operating Current: < 1 mA (typical)
Data Lines: 4-bit parallel input
Address Bits: 8-bit
Output: Serial data
Compatible with RF Transmitter
HT12D Decoder Module:
Operating Voltage: 2.4V – 12V
Data Output: 4-bit parallel
Address Bits: 8-bit
Input: Serial data from RF Receiver
Valid Transmission Indicator: Yes
 
Weight and Dimensions:
HT12E Encoder Module:
Dimensions: Approx. 34mm × 19mm × 8mm
Weight: Approx. 3g
HT12D Decoder Module:
Dimensions: Approx. 34mm × 19mm × 8mm
Weight: Approx. 3g
 
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