Introduction
This manual provides detailed instructions for the safe and efficient operation of your Meister 7474090 Digital Timer. This device is designed to automate the switching of electrical appliances, offering features such as daily programming, a countdown function, and a random generator for presence simulation. Please read this manual thoroughly before use and retain it for future reference.
Safety Information
- The timer is designed for indoor use only.
- Ensure the total load of connected devices does not exceed the maximum rated power of 3600 W.
- Do not immerse the device in water or expose it to excessive moisture.
- The built-in NiMH battery ensures data retention during power outages. This battery is not user-replaceable.
- The device features touch protection for safe household use, tested according to GS quality standards.
- Do not open or attempt to repair the device yourself. Refer all servicing to qualified personnel.
Setup
Before initial use, plug the timer into a live socket for approximately 4 hours to charge the internal NiMH battery. This ensures that the display and programmed settings are retained even when the timer is unplugged.
Setting the Current Time
- Press the CLOCK button. The display will show the current time.
- Press the SET button to enter time setting mode. The hour digit will flash.
- Use the PROG/+ and - buttons to adjust the hour.
- Press SET again to move to the minute setting. Adjust with PROG/+ and -.
- Press SET again to move to the day of the week setting. Adjust with PROG/+ and -.
- Press CLOCK to exit the setting mode.
You can switch between 12-hour and 24-hour display modes by pressing the CLOCK button while in normal time display mode. To switch between summer and winter time, press the CLOCK button and the MANUAL button simultaneously.

Operating Instructions
Programming Timer Events (10 Programs)
The timer allows you to set up to 10 ON/OFF programs. Each program can be configured for specific days of the week or combinations of days.
- Press the PROG/+ button to enter program setting mode. The display will show "1 ON".
- Use the PROG/+ and - buttons to select the desired program number (1-10) and whether you are setting an ON or OFF time.
- Press SET to adjust the day(s) of the week. Use PROG/+ to cycle through various day combinations (e.g., Mon-Fri, Sat-Sun, Mon-Sun, individual days).
- Press SET to adjust the hour for the ON/OFF event. Use PROG/+ and -.
- Press SET to adjust the minute for the ON/OFF event. Use PROG/+ and -.
- Repeat for all 10 ON/OFF programs as needed.
- Press CLOCK to exit program setting mode and return to normal time display.
Countdown Function
The countdown function allows you to switch a connected device ON or OFF after a specified duration.
- Press the CD button. The display will show "CD ON" or "CD OFF" and the countdown time.
- Press SET to adjust the countdown duration (hours, minutes, seconds) using PROG/+ and -.
- Press CD again to start or stop the countdown.
Random Generator
The random generator function switches connected devices (e.g., lights) ON and OFF at irregular intervals, simulating presence to deter potential intruders.
- Press the RND button to activate or deactivate the random function. An "R" icon will appear on the display when active.
- When active, the timer will randomly switch the connected appliance ON and OFF within a set timeframe (typically between 6 PM and 6 AM, but this may vary by model; refer to the specific display indicators).
Manual Override
You can manually switch the connected device ON or OFF at any time, overriding current programs or functions.
- Press the MANUAL button to cycle through ON, OFF, and AUTO modes.
- In ON mode, the device is continuously powered.
- In OFF mode, the device is continuously unpowered.
- In AUTO mode, the timer follows the programmed settings.

Maintenance
The Meister 7474090 Digital Timer requires minimal maintenance.
- Cleaning: Disconnect the timer from the power outlet before cleaning. Wipe the exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Battery: The internal NiMH battery is designed for data retention and does not require user maintenance or replacement. If the display is blank or settings are lost frequently, ensure the timer is plugged in for several hours to allow the battery to charge.
- Storage: Store the timer in a dry, dust-free environment when not in use.
Troubleshooting
- Display is blank: Plug the timer into a live socket for at least 4 hours to charge the internal NiMH battery.
- Timer does not switch ON/OFF as programmed:
- Ensure the timer is in AUTO mode (check the MANUAL button setting).
- Verify that the current time and day are set correctly.
- Check that the ON/OFF programs are correctly entered and enabled for the desired days.
- Ensure the connected appliance is functioning correctly and is switched ON.
- Random function not working: Ensure the RND function is activated (the "R" icon should be visible on the display).
- Countdown function not working: Ensure the countdown duration is set and the function is activated by pressing the CD button.
- Device feels warm: This is normal during operation, especially with high-power appliances. However, if it feels excessively hot or emits smoke/odor, immediately unplug it and discontinue use.
Specifications
- Model Number: 7474090
- Power Supply: 230 V / 50 Hz
- Rated Power: 3600 W
- Protection Class: IP20 (for indoor use)
- Minimum Switching Interval: 1 minute
- Number of Programs: 10 ON/OFF programs
- Internal Battery: NiMH (for data retention)
- Dimensions: 12.3 x 7 x 6 cm (Length x Width x Depth)
- Weight: 180 g
- Material: Plastic
- Color: White

Warranty and Support
For warranty information, please refer to the documentation provided at the time of purchase or contact your retailer. For technical support or further assistance, please contact Meister customer service through their official website or the contact details provided with your product.





