1. Úvod
The KETOTEK KTEM03 Watt Meter Plug is designed to monitor the energy consumption of household appliances and track electricity costs. This device provides detailed measurements including power (W), energy (kWh), voltage, current, frequency, power factor, electricity cost, minimum and maximum power (W), and cumulative operating time. Its user-friendly interface with five buttons allows for quick access to various parameters.
A key feature of the KTEM03 is its split display design, where the measuring plug is separate from the LCD display, connected by a cable. This allows for flexible placement of the display in various locations, including tight corners, inside cabinets, or near refrigerators, ensuring convenient data reading.
2. Konec produktuview
2.1 Komponenty
The KTEM03 Watt Meter Plug consists of two main components: the measuring plug and the separate LCD display unit, connected by a cable.

Figure 1: KTEM03 Watt Meter Plug with its separate display unit, demonstrating flexible positioning.
2.2 Klíčové vlastnosti
- Komplexní monitorování dat: Measures power (W), energy (kWh), voltage, current, frequency, power factor, electricity cost, minimum and maximum power, and cumulative operating time.
- Podsvícený LCD displej: Large display with wide viewing angle for easy reading. Backlight duration is 10 minutes (adjustable).
- Split Display Design: Allows flexible placement of the display unit for convenience.
- Úložiště dat: Automatically saves data during power outages. Options to reset all data or only historical data.
- Vícenásobná ochrana: Overload, kWh alarm, and cost alarm functions with visual warnings.
3. Nastavení a instalace
Follow these steps to set up your KETOTEK KTEM03 Watt Meter Plug:
- Rozbalení: Carefully remove the watt meter plug and display unit from its packaging. Locate the user manual and any included accessories.
- Spojovací komponenty: The display unit is pre-connected to the measuring plug via a cable. Ensure the connection is secure.
- Připojení napájení: Plug the measuring unit into a standard electrical outlet.
- Připojení spotřebiče: Plug the appliance you wish to monitor into the socket on the front of the watt meter plug.
- Display Placement: Position the separate display unit in a convenient location for viewing. It can be mounted on a wall using the provided adhesive hook or screw, or placed on a flat surface.

Figure 2: Various mounting and placement options for the KTEM03 display unit.
3.1 Počáteční zapnutí
Upon plugging in the device, the LCD screen will illuminate. The backlight will remain active for 10 minutes by default. To turn off the backlight, press and hold the "+" button for 3 seconds. Pressing any button will reactivate the backlight.
Video 1: Unboxing and initial setup of the KETOTEK KTEM03 Watt Meter Plug, demonstrating its components and how to connect them.
4. Provoz
The KTEM03 features five buttons for navigating and accessing various measurement data:
- M (Cost) Button: Press to display kWh and electricity cost.
- + (VA) Button: Press to display Watt (W) and Apparent Power (VA).
- OK (A) Button: Press once to display Voltage (V) and Current (A). Press and hold for 3 seconds to display the complete accumulated time.
- - (PF) Button: Press to display Frequency (Hz) and Power Factor (PF).
- Tlačítko Max/Min: Press to display maximum and minimum power readings.

Obrázek 3: Přesview of KTEM03 buttons and their corresponding display functions.
Video 2: Demonstration of navigating through different measurement displays using the KTEM03's buttons.
5. Settings and Data Management
5.1 Nastavení parametrů
To enter the setting mode for various parameters, press and hold the M (Cost) button for 3 seconds. You can then adjust settings such as:
- Overload value (0-3680W)
- Cost alarm value
- KWh alarm value
- Unit price rate
After adjusting a setting, press and hold the M (Cost) button for 3 seconds again to save and exit the setting mode.

Figure 4: Steps for setting the unit price on the KTEM03.
5.2 Data Storage and Reset
The KTEM03 automatically saves all collected data even during a power outage, allowing you to move the meter without losing information. You have two options for resetting data:
- Clear Historical Data (Keep Settings): Press and hold the "+" and "-" buttons simultaneously for 3 seconds. This clears accumulated data but retains your custom settings.
- Obnovení továrního nastavení: Press and hold the "Max/Min" button for 3 seconds. This restores all settings to their factory defaults and clears all data.
6. Ochranné prvky
The KTEM03 Watt Meter Plug incorporates multiple protection features to safeguard your appliances and alert you to potential issues:
- Alarm přetížení: If the connected load's power exceeds the set overload value (standard 3680W, adjustable), the LCD will display "Overload" and an LED light will blink continuously.
- KWh Alarm: If the total power consumption exceeds the set kWh alarm value, the LCD will show "KWh ALARM" and the LED will blink.
- Alarm nákladů: If the accumulated electricity cost surpasses the set cost alarm value, the LCD will display "COST ALARM" and the LED will blink.

Figure 5: Visual representation of the multi-protection alarms on the KTEM03.
7. Specifikace
| Specifikace | Hodnota |
|---|---|
| Číslo modelu | KTEM03 |
| Výrobce | KETOTEK |
| Rozměry produktu | 8.1 x 8 x 15.6 cm |
| Hmotnost položky | 299 g |
| Barva | Bílý |
| Jsou vyžadovány baterie | Yes (1 CR2032, included) |
| Typ baterie | Oxid manganičitý lithný |
| Zahrnuté komponenty | Power Meter Plug, User Manual |

Figure 6: Detailed dimensions of the KTEM03 Watt Meter Plug components.
8. Údržba a péče
- Udržujte zařízení čisté otíráním měkkým suchým hadříkem.
- Nevystavujte zařízení extrémním teplotám, přímému slunečnímu záření nebo vlhkosti.
- Nepokoušejte se zařízení rozebírat ani opravovat sami, mohlo by dojít ke ztrátě záruky a poškození.
- Replace the CR2032 battery when the display becomes dim or unresponsive.
9. Řešení problémů
If you encounter issues with your KETOTEK KTEM03 Watt Meter Plug, please consider the following:
- Žádný displej/Ztlumený displej: Check if the device is properly plugged into a power outlet. If the display is dim, the CR2032 battery may need replacement.
- Nesprávné čtení: Ensure the appliance is correctly plugged into the meter. Perform a factory reset if readings seem consistently inaccurate after checking connections.
- Aktivace alarmu: If an alarm (Overload, KWh ALARM, COST ALARM) is active, check the connected appliance's power consumption or review nastavené prahové hodnoty alarmu.
Pro další pomoc se prosím obraťte na zákaznickou podporu KETOTEK.
10. Záruka a podpora
For warranty information and technical support, please refer to the contact details provided in your product packaging or visit the official KETOTEK webmísto. Uschovejte si doklad o koupi pro případ záručních reklamací.