The Intermatic FM1D20-LV-U is a 7-day mechanical timer module engineered for dependable, scheduled on/off control of HVAC equipment and low-voltage systems. Designed as a plug-in module, it offers a straightforward, no-programming-required solution for automating loads on a weekly cycle — making it an ideal choice for commercial and residential HVAC applications where consistent, repeatable scheduling is essential.
Key Features
- 7-day mechanical timer operation for weekly scheduling flexibility
- Low-voltage (LV) design suitable for HVAC control circuit applications
- Modular plug-in format for quick and easy installation or replacement
- Mechanical operation requires no programming or digital setup
- Reliable Intermatic engineering for long-lasting performance
- Supports repeatable on/off scheduling to optimize system efficiency
Applications
- HVAC system scheduling and control
- Low-voltage circuit time control
- Commercial and residential building automation
- Energy management through timed equipment operation
Why Choose Intermatic
Intermatic is a trusted name in time control solutions, with decades of experience delivering reliable timers and controls for residential, commercial, and industrial applications. The FM1D20-LV-U upholds that tradition, providing a simple yet effective mechanical scheduling solution that integrates seamlessly into existing HVAC control systems.








