1. Introduktion
The Intermatic EI500WC is a 7-day single-pole digital time switch designed for automated control of lights, fans, pumps, and other medium-duty loads. It offers up to 7 ON and 7 OFF operations per week, providing flexibility for energy savings, security, and convenience. This timer is compatible with incandescent, fluorescent, CFL, and LED lighting.
This manual provides detailed instructions for the safe installation, setup, programming, and maintenance of your EI500WC digital time switch.

Figure 1: Intermatic EI500WC Digital Time Switch installed in a standard wall plate.
2. Sikkerhedsforanstaltninger
Please read and understand all instructions before installing or operating this device. Failure to follow these instructions may result in electrical shock, fire, or serious injury.
- ADVARSEL: Risk of Electric Shock. Disconnect power at the circuit breaker or fuse box before installation or servicing.
- Installationen skal udføres af en kvalificeret elektriker i overensstemmelse med alle lokale og nationale el-forskrifter.
- Do not use this device with loads exceeding its specified electrical ratings.
- Sørg for, at alle ledningsforbindelser er sikre og korrekt isolerede.
- Denne enhed er kun til indendørs brug.
3. Pakkens indhold
- Intermatic EI500WC 7-Day Digital Time Switch
- Trådmøtrikker
- Instruktionsmanual (dette dokument)
4. Produktet er slutview
The EI500WC features a clear digital display and intuitive buttons for programming. The main ON and OFF buttons are visible on the front, while programming buttons are located behind a hinged cover.

Figur 2: Forside view of the EI500WC with the programming button cover open, showing CLK, DAY, PROG, RESET, HOUR, MIN, and MODE buttons.
5. Installationsvejledning
5.1. Nødvendigt værktøj
- Skruetrækker (Phillips og/eller flad)
- Trådstrippere
- Voltage tester
- Elektrisk tape
5.2. Ledningsinstruktioner
- Sluk for strømmen: Locate the circuit breaker or fuse that controls the switch you are replacing and turn it OFF. Verify power is off using a voltage tester.
- Fjern den gamle kontakt: Fjern forsigtigt den eksisterende vægplade og afbryderen fra el-dåsen.
- Identificér ledninger: The EI500WC requires a neutral wire. Identify the LINE (hot), LOAD, NEUTRAL, and GROUND wires in your electrical box. If a neutral wire is not present, consult a qualified electrician.
- Tilslut ledninger: Use the provided wire nuts to connect the EI500WC wires to your household wiring as shown in the diagram below.
- Black wire (LINE): Connect to the incoming hot wire from the circuit breaker.
- Red wire (LOAD): Connect to the wire going to the light fixture or appliance.
- White wire (NEUTRAL): Connect to the neutral wire (typically white) in the electrical box.
- Green wire (GROUND): Connect to the bare copper or green ground wire in the electrical box.

Figure 3: Wiring diagram for the EI500WC, showing connections for LINE (Black), LOAD (Red), NEUTRAL (White), and GROUND (Green).
5.3. Montering
- Carefully push the wired timer into the electrical box, ensuring wires are not pinched.
- Secure the timer to the electrical box using the mounting screws.
- Attach the wall plate (not included) over the timer.
- Genopret strøm: Tænd for strømmen igen ved afbryderen.
6. Indledende opsætning
Ved første opstart eller efter et strømafbrydelsetage, the display may show '12:00 AM' and 'MO'. The internal battery maintains settings during brief power interruptions.
6.1. Indstilling af aktuel tid og dag
- Open the hinged cover to access the programming buttons (refer to Figure 2).
- Tryk på CLK knappen. Tidsdisplayet blinker.
- Tryk på TIME button to set the current hour. Observe the AM/PM indicator.
- Tryk på MIN knappen for at indstille det aktuelle minut.
- Tryk på DAG button to set the current day of the week (MO, TU, WE, TH, FR, SA, SU).
- Trykke CLK again to save the settings and exit time setting mode.
7. Betjening og programmering
The EI500WC allows for up to 7 ON and 7 OFF programming events per week. Each event can be set for a specific day or combination of days.
7.1. Indstilling af TIL/FRA-programmer
- Åbn det hængslede dæksel.
- Tryk på PROG button. The display will show '1 ON' and the time will flash.
- Trykke TIME og MIN to set the desired ON time for program 1.
- Trykke DAG to select the day(s) for this program. Options include individual days, weekdays (MO TU WE TH FR), weekends (SA SU), or all days (MO TU WE TH FR SA SU).
- Trykke PROG again. The display will show '1 OFF' and the time will flash.
- Trykke TIME og MIN to set the desired OFF time for program 1.
- Trykke DAG to select the day(s) for this OFF program (should match the ON program days).
- Repeat steps 2-7 for additional ON/OFF programs (up to 7 pairs). To skip a program, press PROG repeatedly until you reach the desired program number or exit programming mode.
- Trykke CLK to exit programming mode and return to normal operation.
7.2. Tilfældig tilstand
The random mode feature varies the ON/OFF schedule by a few minutes, providing a 'lived-in' appearance for enhanced security.
- To activate Random Mode: Press the MODE button until 'RDM' appears on the display.
- To deactivate Random Mode: Press the MODE button until 'RDM' disappears.
7.3. Manuel tilsidesættelse
You can manually turn the connected load ON or OFF at any time without affecting the programmed schedule.
- Tryk på den store ON button to manually turn the load ON.
- Tryk på den store SLUKKET button to manually turn the load OFF.
- The timer will revert to its programmed schedule at the next scheduled ON or OFF event.
8. Vedligeholdelse
8.1. Batterioplysninger
The EI500WC includes an internal battery that provides backup power to maintain time and program settings during power outages. This battery is typically long-lasting and not user-replaceable. If the display is blank or settings are lost frequently after power interruptions, the unit may need replacement.
8.2. Rensning
Clean the surface of the timer with a soft, damp klæde. Brug ikke slibende rengøringsmidler eller opløsningsmidler.
9. Fejlfinding
- Timer display is blank: Ensure power is supplied to the circuit. Check circuit breaker.
- Load does not turn ON/OFF as programmed:
- Verify current time and day are set correctly.
- Check that ON/OFF programs are set for the correct times and days.
- Ensure the timer is not in manual override mode conflicting with the program.
- Confirm wiring connections are secure.
- Timer loses settings after power outage: The internal backup battery may be depleted. The unit may require replacement.
- Genstarts knap: If the timer behaves erratically, use a pointed object (like a paperclip) to press the recessed NULSTIL button. This will clear all settings and restore default values, requiring you to re-enter time, day, and programs.
10. Tekniske specifikationer
| Feature | Specifikation |
|---|---|
| Modelnummer | EI500WC |
| Voltage | 125 VAC, 60 Hz |
| Maksimal belastning | 15 Amps (1875 Watts) Resistive, 1000 Watts Tungsten |
| Motorbelastning | 1 / 4 HP |
| Antal programmer | Up to 7 ON/OFF events per week |
| Switch Type | Single-Pole (1-way) |
| Monteringstype | Decorator Wall Plate/Standard Wall Box |
| Dimensioner (H x B x D) | 2.75 cm x 1.75 cm x 1.36 cm |
| Farve | Hvid |
| Certificeringer | UL-listet |
11. Garantioplysninger
Intermatic warrants this product to be free from defects in material and workmanship for a period of one (1) year from the date of purchase. This warranty covers replacement of the unit only and does not include labor costs associated with removal or reinstallation.
This warranty does not apply to defects resulting from improper installation, misuse, abuse, accident, or unauthorized modifications. For warranty service, please contact Intermatic customer support.
12. Kundesupport
If you have any questions regarding the installation, operation, or troubleshooting of your Intermatic EI500WC Digital Time Switch, please refer to the Intermatic website or contact their customer support directly. Always have your model number (EI500WC) available when contacting support.





