Beseler Audible Repeating Electronic Enlarging Timer.

AUDIBLE/REPEATING ENLARGING TIMER, 120V Analog design. Times from 0.1 to 110 seconds.

Electronic timers with audible "metronome" tone. Suitable for use with all light sources, including those with inductive loads such as cold light heads. The timers can produce a "beep" every second to allow burning and dodging operations to be performed precisely. A switch on the timer allows for audible or silent operation. Dual time control with 10x range selector provides precise exposure times throughout the entire range. Luminous dials and switches allow for easy operation in the dark. Each timer has two grounded outlets each capable of 500 watts, one for the enlarger and one for a safelight. Built-in circuitry automatically switches the safelight off during exposure. Each timer will accept an accessory foot switch (#8179).