RTC Timer Relay Module – Real Time Clock 24H Programmable Timer Controller

The RTC Timer Relay Module is a multifunction real-time clock based timing controller designed to automatically switch electrical devices ON and OFF at precisely scheduled times. Featuring a built-in RTC chip with 24-hour LED display, 5 programmable time periods, and 5 selectable operating modes, it enables reliable daily, weekly, or monthly automation for home, industrial, and DIY electronics applications.

Key Features

• Built-in real-time clock (RTC) with 24-hour LED display
• Five programmable time periods (PE-1 to PE-5)
• Five function modes (P-1 to P-5) for daily, weekly, and monthly scheduling
• Relay output supports up to 10A switching capacity
• Wide operating voltage range from 5V to 60V DC
• Powered via terminal block or Micro USB 5V input
• Built-in backup battery to retain time during power loss
• Built-in buzzer for audible alerts (enable/disable selectable)
• Auto display sleep mode to save power
• Long relay lifespan rated over 10 million operations

Technical Specifications

Applications

• Home Automation and Smart Lighting
• Automatic Appliance Scheduling
• Irrigation and Water Pump Timing Control
• Aquarium and Greenhouse Lighting Automation
• Industrial Equipment Scheduled Control
• Signage and Display Timing Systems
• DIY Electronics and Automation Projects

Important Notes

• Set the initial date and time correctly before programming any schedule.
• The CLE (stop) time/date must always be later than the OPE (start) time/date for correct operation.
• Install the backup battery to retain time settings during power interruptions.
• Do not exceed the rated relay switching current of 10A; use an external contactor for higher loads.
• Select the correct operating mode (P-1 to P-5) based on whether scheduling is daily, weekly, or date-specific.
• Ensure proper insulation and wiring when switching AC mains loads through the relay output.