Photographic darkroom control system with timing means

A process timing and controlling device system for use in photographic darkrooms involving multiple timing and control process steps comprising,

• a control console, programmable in at least on channel to automatically run and step through substantially all timing and control process steps,
• step timing means in at least one channel for counting down time remaining in a particular process step,
• step timing indicator means in at least one channel for indicating time remaining in a particular process step,
• means defining a power supply connecting a source of power with said console and said timing means which when activated supplies power to said console and timing means,
• means for initiating a program step in at least one channel,
• switching means in at least one channel for manually stepping through steps independently of the programmed time including means for interrupting a programmed timing step during automatic running thereof and means for advancing from the interrupted timing step to the subsequent program step,
• a plurality of relays for operating programmed timing and control functions, and relay driving means programmed to select an appropriate output to activate each said relay.