12V 16A Programmable Timer – Precision Automation with 8 Daily Cycles and Power-Loss Backup
Imagine your pump starting at 6 AM, shutting off after 20 minutes, and restarting in the evening—all without you lifting a finger. That is the power of a well-configured programmable timer. If your setup runs on 12V DC and you need reliable, repeatable automation, this relay is the perfect solution for set-and-forget control.
Note: This relay is designed exclusively for 12V DC power supplies. Please verify your system compatibility before installation.
Why choose this model? (Key Benefits):
- 8 ON + 8 OFF daily programs — Up to 16 automatic switching operations every 24 hours, with 15 flexible weekly combinations, including Monday–Friday or weekend-only settings.
- Accuracy of ±1 minute/month — Features a high-quality CMOS quartz oscillator to prevent time drift, eliminating the need for frequent recalibration.
- Automatic power-loss backup — An internal battery keeps the clock running and saves all your programs, ensuring no data is lost during power outages.
- 16A switching capacity — Capable of directly controlling pumps, fans, or LED lighting systems without the need for an additional external relay.
- 1-minute minimum cycle — Ideal for applications requiring short, repeated bursts, such as zone-based irrigation.
- LCD display with LED indicator — Check the current time and relay status at a glance without needing to open your electrical panel.
- Compact design (60×60×30 mm) — Easily mounts into electrical enclosures or project housings with minimal space requirements.
Performance and Technical Details
At the heart of this timer is a CMOS microcontroller with a quartz oscillator—the technology that distinguishes a reliable timer from one that drifts by minutes each month. The 16A contact is built to handle real-world loads, including submersible pumps, irrigation systems, high-power LED strips, and industrial fans, directly and efficiently. Programming is straightforward via the dedicated physical buttons: simply select your days, set the start and stop times, confirm, and repeat for each cycle.
| Parameter | Specification |
|---|---|
| Supply Voltage | 12V DC |
| Max Switching Current | 16A |
| Number of Programs | 8 ON + 8 OFF (Daily/Weekly) |
| Minimum Setting Interval | 1 minute |
| Clock Accuracy | ±1 minute/month |
| Time Format | 12h / 24h |
| Display | LCD with activity LED |
| Backup | Internal battery |
| Ingress Protection | IP20 |
| Operating Temperature | -10°C ~ +40°C |
| Dimensions | 60 × 60 × 30 mm (L × H × D) |
| Technology | CMOS with microcontroller and quartz |
Programming and Usage Instructions
- Connect the relay to your 12V DC power source and the load you wish to control.
- Upon initial power-up, set the current time and day using the dedicated front-panel buttons.
- Select your preferred time format: 12h or 24h.
- Enter the programming mode to choose your day combination: daily, Monday–Friday, weekends, or specific individual days.
- Set the ON time for your first program, followed by the corresponding OFF time.
- Repeat steps 4–5 for each of the 8 available cycles.
- Confirm your settings and check the LED indicator to verify that the relay is operating according to your schedule.
- In the event of a power cut, the internal battery will preserve your clock settings and saved programs.
Package Contents
- 1 × Digital Timer Relay 12V 16A
Frequently Asked Questions
Does this timer work with 220V AC mains?
No. This relay is designed exclusively for 12V DC power. For mains voltage applications, please use a dedicated 220V AC model.
Will I lose my programs during a power outage?
No. The internal backup battery keeps the clock running and retains all your saved programs, regardless of how long the power is out.
Can I set different programs for different days of the week?
Yes. The device offers 15 day-combination options: daily, Monday–Friday, Saturday–Sunday, or individual days—each with its own independent ON/OFF cycles.
What equipment can I control with this relay?
Any device powered by 12V DC with a consumption of up to 16A, such as water pumps, irrigation systems, LED lighting, fans, small motors, or DIY agricultural equipment.
What is the minimum interval between start and stop?
The minimum programmable interval is 1 minute—perfect for short-cycle applications like zone irrigation or intermittent ventilation.
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