12V Digital Timer Relay Switch – Dual LED Display, Programmable Cycle/Delay On-Off Controller for Automation

Description

Description

The 12V Digital Timer Relay Switch is a versatile, high-precision timing control module designed for automation systems, DIY electronics projects, and industrial applications. Operating on a standard 12V DC supply—compatible with automotive systems, solar battery banks, PLC panels, and other 12V DC power sources—this controller enables programmable time-based switching of electrical loads with exceptional accuracy and flexibility.

At the heart of this module is a powerful SPDT relay rated for up to 20A at 12V DC or 10A at 250V AC, allowing direct control of pumps, fans, lights, heaters, solenoids, and other equipment without requiring external contactors for moderate loads. The dual LED display (typically red and blue digits) shows both current timing parameters simultaneously, providing clear, real-time feedback during programming and operation .

The controller features multiple programmable timing modes (typically 12-18 modes depending on the specific model), including delay-on, delay-off, cycle timing (endless loop), interval timing, and pulse output modes. The timing range is adjustable from 0.01 seconds up to 999 minutes or 999 hours, depending on the selected unit . Users can set independent ON and OFF durations for each channel, making this device ideal for applications requiring repetitive cycling or precise single-shot timing.

Programmable operating modes include:

• Countdown (Delay) Mode: Relay activates after a preset delay when triggered.

• Cycle (Loop) Mode: Relay continuously alternates between ON and OFF states at programmed intervals.

• Infinite Cycle Mode: Supports continuous on/off loop switching with settable ON and OFF times independently .

• Trigger Modes: Supports high-level (3.0V–24.0V), low-level (0.0V–0.2V), or switch/button triggering .

Additional features include a stop/pause button for emergency stopping, non-volatile memory that retains all settings after power loss, and an optocoupler-isolated input for enhanced noise immunity in industrial environments . The module is typically housed in a durable ABS plastic enclosure (or industrial-grade PCB with mounting holes) and can be panel-mounted or installed inside control cabinets.

Whether you need to automate a greenhouse irrigation system, create a timed ventilation fan for a workshop, control a 12V water pump on a timer, build a battery charger cycler, or program an industrial process timer, this 12V Digital Timer Relay Switch delivers reliable, accurate, and programmable timing control in a compact, easy-to-use package.

Key Features

• Dual LED Display – Red and blue digital displays show real-time status and parameters simultaneously for easy monitoring .

• Wide Timing Range – Adjustable from 0.01 seconds to 999 minutes (or 999 hours on advanced models) with selectable time units .

• Multiple Operating Modes – Supports delay-on, delay-off, cycle (endless loop), interval, pulse, and trigger (high/low/switch) modes .

• High-Current Relay Output – Rated for up to 20A at 12V DC or 10A at 250V AC (models vary; check specifications) .

• 12V DC Operation – Compatible with automotive systems, solar batteries, PLC panels, and 12V power supplies.

• Optocoupler Isolation – Protects control circuitry from electrical noise and voltage spikes on trigger inputs .

• Independent ON/OFF Timing – Set separate ON duration (OP) and OFF duration (CL) for cycle mode applications .

• Non-Volatile Memory – All programmed parameters are automatically saved and retained after power loss .

• Stop/Pause Function – Dedicated button provides emergency stop or pause capability during operation .

• Panel/DIN Mountable – Compact design with mounting holes or DIN rail adapter compatibility for easy installation .

Technical Parameters