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The SUL181D, an analog timing mechanism, incorporates switch-segment coding, allowing for swift comprehension and effortless substitution. With a minimum interval of a quarter-hour, it offers the flexibility of toggling between persistent on, auto, and uninterrupted off modes.

  • 1 Channel,96 switch segments
  • Simple daylight savings/winter time correction
  • Quartz control,Toggle preselection
  • Switch status display,permanent on/off switch

Stable Delvery Time

Technical Support

2 Years

SUL181d Timer Switch

Elevate Your Operations with the SUL181d Timer Switch

The SUL181D Weekly Time Control Switch is a highly versatile and reliable mechanical timer switch designed for a wide range of applications, ensuring efficient energy management and automation in various systems. The SUL181d Timer Switch is a robust solution designed to meet the rigorous demands of various applications. This analog time switch offers a 1-channel daily program with a power reserve ensured by a NiMH rechargeable battery.

Key Features

SUL181d Weekly Time Control Switch Precision Control

Weekly Time Control Switch Precision Control

Quartz-controlled operation with 96 switching segments, ensuring precise time management.

Versatile Programming

Programmable every 15 minutes with the shortest switching time set at 15 minutes, suitable for multiple scheduling needs.

SUL181d Weekly Time Control Switch Ease of Use

Ease of Use

Features manual switches with three positions (Continuous ON, AUTO, Continuous OFF), alongside a switching status display, making operations straightforward and user-friendly.

High Compatibility

Equipped with DuoFix spring terminals for 2 conductors each, accommodating wire or strand (with or without wire end sleeve).

Technical Specifications

Operating Voltage: 12 – 24 V UC
Frequency: 50 – 60 Hz
Installation Type: DIN rail mountable, ensuring easy integration into various setups.
Environmental Adaptability: Operates within an ambient temperature range of -20°C to 55°C, making it suitable for diverse environments.
Safety and Quality: Encased in high-temperature resistant, self-extinguishing thermoplastic, with a protection class II according to EN 60 730-1.

Applicable Scenarios

The SUL181D Weekly Time Control Switch is ideal for applications requiring reliable time control, such as lighting, heating systems, and industrial equipment. Its dependable programming capabilities make it a preferred choice for facilities management, manufacturing processes, and commercial building automation.

Why Choose Moreday?

Certified Quality

All products, including the SUL181d, are backed by stringent quality checks and certifications, ensuring top-tier performance and reliability.

Expertise and Innovation

With a history of excellence and a forward-thinking approach, we deliver solutions that not only meet but exceed client expectations.

Dedicated Support

Our team offers comprehensive support and tailored solutions, ensuring that your operations run smoothly and efficiently.






Operating Voltage


Power Consumption


Switching Contact

Potenzialfrei(not for SELV/PELV)


Two-way Switch


<3 mm(u)

Contact Material


Switching Capacity

16A,250V~,cos =1 4A,250V~,cos q=0.6

Incandescent lamp load


Fluorescent lamp load

Parallel-corrected 2x40W(4.7uF)

Ambient Temperature


Time Accuracy

<+1s/s day at +20°C

popular questions


1. How do I program the SUL181d Timer Switch?

The SUL181d can be programmed using the manual switch to set the current time and then using the segment pushers around the dial to define on/off times. Each segment represents a 15-minute interval, allowing detailed control over daily scheduling.

2. What types of devices can I control with the SUL181d?

The SUL181d is versatile enough to control a variety of devices, including lighting systems, heating and ventilation equipment, and industrial machinery. It's especially useful in scenarios that require precise control over operational timings.

3. Can the SUL181d operate outdoor lighting?

Yes, the SUL181d is suitable for controlling outdoor lighting. However, ensure that the installation adheres to the IP20 rating, which is designed for indoor use, meaning the switch itself should be housed in a protective enclosure if used outdoors.

4. What is the power reserve feature of the SUL181d?

The SUL181d features a power reserve maintained by a NiMH rechargeable battery. This allows the timer to keep running and maintain set programs for up to 3 days during a power outage.

5. Is the SUL181d difficult to install?

Installation of the SUL181d is straightforward due to its DIN rail mounting design. It fits into standard electrical panels, and the DuoFix spring terminals make wiring simple and secure for both solid and stranded wires.

6. How do I manually override the programmed settings?

The SUL181d includes a manual switch with three positions: Continuous ON, AUTO (to follow the set program), and Continuous OFF. This switch allows you to manually override the programmed settings at any time, providing flexibility in unexpected situations.

7. What should I do if my SUL181d is not functioning properly?

If the SUL181d is not working as expected, check to ensure that it is properly installed and programmed. Verify the load and power connections. If issues persist, refer to the troubleshooting section of the manual or contact Moreday support for assistance.

8. What maintenance is required for the MDPV-30?

The MDPV-30 is designed for low maintenance. Regular inspections to check for clear indicator lights and ensuring that the environment remains within specified limits for temperature and humidity are recommended to maintain optimal performance.

9. Where can I purchase the MDPV-30 and find more information?

The MDPV-30 can be purchased through Moreday's official distribution channels, including Alibaba and direct sales through our website. For more detailed information, technical specifications, or additional queries, please contact our customer support team or visit the Moreday website.

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