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
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Input voltage: 125 VAC, 60 Hz
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Mechanism: Digital/electronic
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Schedule: 7 day
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Total events: 14
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Minimum interval: 1 minute
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Switch type: SPST-NO
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Neutral required: Yes
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General-purpose load: 15 A at 125 VAC
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Resistive heater: 15 A / 1875 W
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Motor load: 1/4 HP at 125 VAC
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Electronic ballast/LED: 4 A / 500 VA
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Inductive load: 1000 VA at 125 VAC
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Tungsten: 1000 W
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Backup: Built-in rechargeable Ni-MH battery
Dimensions
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Height: 4.125 inches
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Width: 1.75 inches
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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.
Backup Type Battery Color White
Input Voltage Range(s) 125 VAC, 60 Hz Maximum ON/OFF Operations 14
Mechanism Type Digital/Electrical Operation Mode 24 hour
Wiring Configurations Single Minimum ON/OFF Times 1 min
Wall Plate Configurations Single-Gang Neutral Connection Required Yes
Warranty Period 1-Year limited Application Compatibilities CFL, Fluorescent, Incandescent, LED
Battery Service Type Non-Serviceable Battery Type Rechargeable
Electronic Ballast LED 4 A, 500 VA General Purpose 15 A, 125 VAC, 60 Hz
Inductive 1000 VA, 125 VAC, 60 Hz Inductive Load Ratings Ranges 1000 VA, 125 VAC, 60 Hz
Motor (Three-Phase) 1/4 HP, 125 VAC, 60 Hz Motor Three Phase Ranges 1/4 HP, 125 VAC, 60 Hz
Rating General Purpose Resistive Heater 15 A, 1875 W
Timer Type Digital Tungsten (Incandescent) Range(s) 1000 W
Tungsten Incandescent 1000 W Operating Temperature Max (°C) 40
Operating Temperature Max (°F) 104 Operating Temperature Min (°C) 0
Operating Temperature Min (°F) 32 Product Depth (in) 1.4375
Product Depth (mm) 36.5 Product Height (in) 4.125
Product Height (mm) 104.8 Product Width (in) 1.75
Product Width (mm) 44.5 Unit Carton Height (in) 4.88
Unit Carton Length (in) 2.13 Unit Carton Weight (lb) 0.472
Unit Carton Width (in) 3
