Introduction
The EL74 is a four-channel electronic time control that provides simple, inexpensive control of
lighting, HVAC, motors, pumps, bell-ringing or any electrical load with a time-of-day schedule.
The control may be utilized as a 24 hour, 7 day or full year (365 day) control.
The EL74 allows for the programming of 128 events. An event could be an ON, an OFF, one of
four user-defined durations or one of four user-defined duty cycle patterns. In addition, up to
32 sensor events can be programmed to allow control based on temperature and light level.
Other parameters can be used; contact the factory for information.
The EL74 is a member of the EL series of time controls that also includes the EL71, EL72,
EL78, and EL712 (1, 2, 8 and 12 channel, respectively). All are versatile, yet easy to program.
A simple keypad combined with a large, user-friendly display takes the frustration out of
programming.
Specifications
Programming Capabilities
• 128 Events - An event can be an ON, an OFF, one of four user-defined durations, or one of
four user-defined duty-cycle patterns. Each event can be assigned to any channel. Each
event can be assigned to any day or any combination of days, including the three holiday
schedules.
• 4 Durations - Each duration can be programmed from 1 second to 23 hours, 59 minutes and
59 seconds.
• 4 Duty Cycle Patterns - Each duty cycle pattern can be programmed with ON durations and
OFF durations from 1 second to 23 hours, 59 minutes and 59 seconds.
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