Finder 20.21.8.008.4000 digital programmable time switch with 230 V AC supply, weekly scheduling and single changeover relay output for automatic electrical load control.
£21.65
The Finder 20.21.8.008.4000 is a compact and reliable digital time switch designed for automatic control of electrical loads in residential, commercial and industrial installations. As part of the trusted Finder 20 Series programmable time switches, it provides accurate scheduling control for lighting, heating, irrigation and automation applications.
This programmable timer combines a clear digital display, weekly scheduling capability and battery-backed memory to provide dependable automatic switching. Its compact modular design allows simple installation on standard DIN rails, making it suitable for electrical distribution boards and automation control panels.
With an 8 A switching capacity, single-channel operation and a 230 V AC supply, the Finder 20.21.8.008.4000 provides flexible time-based control for a wide range of electrical equipment where reliable automation is required.
Digital time switches such as the Finder 20.21.8.008.4000 allow electrical loads to be switched automatically according to programmed schedules. This improves energy efficiency by ensuring equipment operates only when required.
The Finder 20 Series is designed for installers requiring dependable programmable control in compact electrical systems. Its DIN rail mounting format and intuitive programming functions make it suitable for modern building automation applications.
| Manufacturer | Finder |
|---|---|
| Series | 20 Series Time Switches |
| Model | 20.21.8.008.4000 |
| Product type | Digital programmable time switch |
| Supply voltage | 230 V AC |
| Contact configuration | 1 CO (SPDT) |
| Rated current | 8 A |
| Programming | Weekly |
| Mounting type | 35 mm DIN rail mounting |
| Display type | LCD digital display |
| Backup | Internal battery backup |
| Protection rating | IP20 |
| Module width | 17.5 mm |
The Finder 20.21.8.008.4000 is a digital programmable time switch used for automatic control of lighting, heating and other electrical loads.
The unit operates from a 230 V AC supply.
The time switch provides one changeover relay output for controlling connected electrical loads.
Yes, the Finder 20.21.8.008.4000 is designed for standard 35 mm DIN rail mounting.
Yes, the time switch includes battery-backed memory to maintain programmed settings during power interruptions.
Finder programmable time switches provide reliable scheduling control, compact installation and efficient automation for residential, commercial and industrial electrical systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...