Grasslin [Diehl] SPDT Panel Mount 7-Day Timer [115v] (FM1SWUZ-24U)

Type:	Electrical: Time Clock
Mfr	Grasslin Controls
Mfg Part #	34-0035-K
Hzn Part #	59-579-1010

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TAGS: electrical, grasslin, timeclock

Details

A 7-day timer helps automate equipment operation by switching connected loads on a programmed weekly schedule, and this Grasslin Diehl panel-mount version is a 115 volt SPDT model using the FM1SWUZ-24U reference. Timers like this are useful when recurring equipment cycles need to happen consistently without manual switching.

The panel-mount format gives this unit practical value because it is intended to integrate into a control enclosure rather than operate as a loose accessory. The SPDT switching style and 7-day programming flexibility make it a strong fit for installations that need more than a simple daily routine.

This type of part is especially useful when replacing an older mechanical timer or adding scheduled control to compatible pool, spa, or support equipment. That helps improve consistency and reduce manual oversight.

Installed in the proper application, this timer helps support dependable weekly scheduling and cleaner automated equipment management.

7-day panel-mount timer with SPDT switching and 115 volt operation
Helps automate recurring equipment schedules
Useful for weekly programmed on and off control
Supports cleaner control panel integration
Improves timing consistency and operating convenience

Grasslin Controls – Timers, Time Switches and Pool & Spa Control Systems

Who is Grasslin Controls?

Grasslin Controls is a leading manufacturer of time control and energy management devices, with over 70 years of experience in precision timing technology. Known for reliability and efficiency, Grasslin produces timers and control systems used in pool, spa, HVAC, and lighting applications. Their products are widely used to automate system operation, improve energy efficiency, and simplify equipment control.

What products does Grasslin Controls specialize in?

Grasslin Controls specializes in programmable timers, mechanical time switches, digital timers, and control devices. Their product lineup includes time clocks and automation components used to control pumps, heaters, lighting systems, and filtration cycles in pool and spa environments. These devices help regulate operation schedules and optimize system performance.

Why choose Grasslin Controls parts for your pool or spa?

Grasslin products are known for precision timing, durability, and energy-saving performance. Their timers help automate equipment operation, reducing manual intervention and improving efficiency. Pool professionals and homeowners choose Grasslin for dependable control solutions that lower energy costs and maintain consistent system operation.

How do you identify and choose the correct Grasslin Controls part?

To select the correct Grasslin timer or control device, it’s important to match specifications such as voltage, load capacity, timer type (mechanical or digital), and application requirements. Reviewing system compatibility ensures proper fit and performance. Choosing the right timer helps maintain efficient scheduling and reliable operation.

Need help finding the right Grasslin Controls part?

At Bath & Spa Parts Online, we carry a wide selection of Grasslin Controls pool, spa, and bath parts ready to ship. Can’t find what you need? Contact our Product Specialists at 800-918-9143, use the live chat, or visit our Contact Us page. For installation guides, part diagrams, and troubleshooting resources, visit the Bath & Spa Parts Online Knowledge Base for expert support.

Details

Grasslin Controls – Timers, Time Switches and Pool & Spa Control Systems

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