Brand: Intermatic | Manufacturer Part Number: EI500WC | Big Frog Supply SKU: EI500WC
Product Overview
The Intermatic EI500WC is a white 7-day digital in-wall timer for scheduling one compatible 125-volt load with different operating times throughout the week. It provides 14 total events—seven ON and seven OFF—and supports one-minute scheduling resolution. This allows weekday and weekend operation to be tailored more precisely than a repeating 24-hour timer. A random mode varies the programmed schedule to create a more lived-in appearance when the controlled lighting is used for occupancy simulation.
The backlit LCD supports setup and everyday use, while the built-in rechargeable battery preserves the program during a power interruption. The battery is not user-replaceable. The timer replaces a compatible single-pole switch and requires a neutral connection in the wall box. It supports approved incandescent, fluorescent, CFL, LED, motor, inductive, and resistive-heater loads within the listed ratings. A decorator-style wall plate is required but is not included.
Key Features
- 7-day digital programmable timer
- 14 total events: seven ON and seven OFF
- One-minute minimum scheduling interval
- Random mode for varied lighting schedules
- Backlit LCD display
- Built-in rechargeable battery backup
- Single-pole SPST-NO switching
- Neutral connection required
- White decorator format; wall plate not included
Common Uses
- Indoor and outdoor lighting controlled from an indoor wall box
- Occupancy-simulation lighting schedules
- Ventilation and approved motor loads
- Daily or weekday/weekend equipment control
Technical Specifications
- Input voltage: 125 VAC, 60 Hz
- Mechanism: Digital/electronic
- Schedule: 7 day
- Total events: 14
- Minimum interval: 1 minute
- Switch type: SPST-NO
- Neutral required: Yes
- General-purpose load: 15 A at 125 VAC
- Resistive heater: 15 A / 1875 W
- Motor load: 1/4 HP at 125 VAC
- Electronic ballast/LED: 4 A / 500 VA
- Inductive load: 1000 VA at 125 VAC
- Tungsten: 1000 W
- Backup: Built-in rechargeable Ni-MH battery
Dimensions
- Height: 4.125 inches
- Width: 1.75 inches
- Depth: 1.438 inches
Installation Notes
Disconnect power and confirm that a neutral conductor is available before installation. Verify the wall box depth, connected load, and wiring arrangement against the timer instructions. The EI500WC itself is an in-wall control and must be installed in a suitable protected electrical box by a qualified person.
Frequently Asked Questions
How many schedules can the EI500WC provide?
It provides seven ON and seven OFF events for a total of 14 weekly events.
Does it require a neutral wire?
Yes. A neutral connection is required.
Is the battery replaceable?
No. The rechargeable backup battery is built in and non-serviceable.
Is the wall plate included?
No. Use a compatible decorator-style wall plate.
Why Buy This Product from Big Frog Supply?
The EI500WC is suited to customers who need a full weekly schedule in a standard in-wall control. Big Frog Supply clearly identifies the event count, random mode, neutral requirement, battery type, load ratings, and wall-plate exclusion so it is not confused with a simpler countdown or 24-hour timer.
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