Dimco-Gray 300 Large Dial Darkroom Timer/Controller, 60 minute; 115 VAC

a 5-ft (1.5-m) power cord with a three-prong plug.

The luminescent and easy- to-read numerals on 6-½" diameter face, dial, and hands makes this timer an excellent choice for precise timing required in light-sensitive processing. Set by seconds, minutes or a combination of the two. The dual-cam timing system renders precise timing (±0.015% at maximum dial setting) over long intervals.
Timer features on/off, low, or high volume buzzer with manual shutoff. Two, three-wire receptacles rated at 600 watts each can control most darkroom equipment, or use with a relay for heavier loads.
High-impact, chemical and moisture resistant case has a recessed handle in the back and key holes for wall mounting. Plastic boot over the power switch prevents corrosion from chemicals or water.