F-Stop timer enabling accurate interval timing up to 1/24th Stop Resolution. Easy to use for beginners yet with features required by professional printers- Saves time and paper and money

• Automatic test strip generator mode - for quickly producing test strips with 1/12th to 1/2 stop increments
• 2 completely independent programmable channels, up to 10 steps each having separate base and burn-in exposure times. These can be  linked for split grade printing  - a complete printing sequence can be set up easily often with reference to just a single test strip!
• Exposure times are set in coarse and fine exposure steps producing consistent changes on the paper - Fine step size 1/24th f-stop (approx 2%), Coarse step size can be set to 1/2, 1/3, 1/4, 1/6 or 1/12 of a f-stop
• Burn in exposures in programme mode are set in steps of 1/12th to 1/2 f-stop.
• Can use linear timing  - 1 to 240 secs in 1 second intervals - NB Limited functionality only in this mode
• Dry Down Exposure Compensation of +/-20% to allow for dry-down or and/or toning with respect to a test print.
• Display type: Yellow LED, 590nm safe for colour as well as b+w papers - Illuminated control buttons
• Audible beep at the end of each exposure, and optional seconds tick
• Can be connected to the RH ZoneMaster exposure meter using a serial cable
• Automatic safelight switching
• Manual (focus) mode
• Accuracy: Better than 1%,
• Timing range: 1.0 to 240 seconds per step, up to ten steps per channel, two channels. Timing resolution: 0.01 sec
• Switching capacity: 750W per outlet, 750W total (230V only; 500W total for 115V version.). Suitable for cold light enlargers
• Input voltage: 200-250V AC 50Hz (100-125V 50/60Hz optional)
• Accessories supplied: Mains lead, footswitch, enlarger/safelight connectors, instructions