Hi, I want do a prototype which modify any 12V running hour meter either automotive or industrial type to use for vehicle running hour usage record. The function prefer can reset, have 12VDC input power so that I can control run or stop the running hour meter depend how I add extra external components from vehicle on off input. Prefer device can run at hot temperatures such as 60°C, because the running hour meter I modified need fix at the vehicle dashboard which direct to hot sun.
Prefer bigger size like square type. I will create the new aluminium housing so that the running hour meter and other my control components can hiding inside the aluminium housing. If u can design dual display more better, such as top digital display is non resettable running hour, bottom digital display is resettable. Must use for at least 6 years life, so prefer the durable running hour meter.