Electronic counters and electronic timers are completely electronic units for performing a variety of counter or timer functions

Counter and timer boards are computer cards that perform digital counting and/or timing functions

Time delay relays and solid state timers use solid state electronic devices to provide a time delay

Electromechanical counters and electromechanical timers accept inputs to operate mechanical display, such as rotating wheels or knobs

Mechanical timers are used to actuate devices at the end of a specified time period.

Specialty timers are specialty or proprietary products related to timers and timing devices

Specialty IC timing devices are specialty or proprietary products related to IC timing devices.