Support Infrared Control, Powerful Function Supports Switching Between Self-Locking, Inching, And Interlocking Modes, And Has Led Lights For Prompts. Equipped With Cascade Port, Supports Ttl Serial Port And Then Burning The Infrared Remote Control Relay Module Is Programmed By The STC8G1K08 Chip, And The Relay Is Controlled By Sending Instructions Through The Infrared Remote Control. It Has The Advantages Of Multi-Mode Switching, Low Signal Transmission Delay, Low Power Consumption, And Stable Performance. The "Ok" Button On The Infrared Remote Control To Switch Modes. Product Name:Infrared Remote Control Single-Channel Relay Module Product Interface:Type-C Port Advantages:Low Signal Transmission Delay, Low Power Consumption, Stable Performance Infrared Remote Control Instructions 1. Power The Infrared Remote Control Single-Channel Relay Module (5v Power Supply) 2. The Module Has 2 Modes, Namely: Self-Locking Mode (Mode 1) And Jog Mode (Mode 2). After Power-On, The Module Defaults To Mode 1. 3. The "Ok" Button On The Remote Control To Switch The Current Mode. The Mode Switching Sequence Is: 1→2,2→1; 4. In Self-Locking Mode: Remote Control "1" Controls The Relay To Open And Close. The Button To Open The Relay. It Again To Close The Relay. In Jogging Mode: Remote Control "1" Controls The Relay To Open And Close. The Button To Open The Relay. The Relay Automatically Turns Off After A Delay Of 1 Second. Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Colour:As Shown Material:PCB+Plastic Package Contents: 2 x Infrared Remote Control Single-Channel Relay Module 2 x Infrared Remote Control 2 x Single Row Of Pins (4pin) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.