Build this simple Cmos 4060 timer yourself - using cheap off-the-shelf components.
Comments

Suggestions
Breadboard Layout Choosing Parts Testing Your Timer More Timer Circuits Firefox Optimised

24-Hour Timer No.1 - Photograph

Free Circuit

Simulation

Circuit Board

This is a photograph of the First Cmos 4060 Multi-Range Timer. It will adjust from about 30-seconds to 24-hours and beyond. It's designed to provide a single output period - but it's easily modified to produce a regularly repeating output. I used an SPCO/SPDT relay in the prototype - you can use a multi-pole relay if it suits your application.
Use Your Mouse Wheel To Zoom
Image Magnifier Courtesy Of DynamicDrive.Com