1. Introduzione
This manual provides detailed instructions for the installation, operation, and maintenance of your ATORCH Smart Electricity Meter. Please read this manual thoroughly before use to ensure safe and correct operation. The meter is designed for single-phase AC power systems and is available in three versions: GR2P (Basic), GR2PW (WiFi), and GR2PWS (WiFi with Relay/Switch).
Differenze di modello:
- GR2P (Basic Version): No WiFi, no relay, no switch. Provides prompt alarms but does not cut off power.
- GR2PW (WiFi Version): With WiFi, no relay, no switch. Provides prompt alarms but does not cut off power.
- GR2PWS (WiFi + Relay Version): With WiFi, with 100A relay, with switch. Provides prompt alarms and can cut off power.
Important Notice: This product is designed for unidirectional current measurement and cannot be used for solar power generation or systems with bidirectional current flow. It measures forward current only and will not register negative current.

Image: Visual comparison of the three models (GR2P, GR2PW, GR2PWS) highlighting their WiFi, switch, and relay capabilities.

Image: A table detailing the features of each model, including WiFi, relay, and switch support.
2. Informazioni sulla sicurezza
- Scollegare sempre l'alimentazione prima di installare o effettuare la manutenzione del contatore.
- L'installazione deve essere eseguita da un elettricista qualificato, nel rispetto delle normative elettriche locali.
- Non utilizzare il dispositivo se appare danneggiato.
- Ensure correct wiring to prevent damage to the device or electrical system.
- Il volume misuratotage and current should not exceed the calibration range of the device.
3. Specifiche
| Parametro | Basic Version (GR2P) | WiFi Version (GR2PW) | WiFi Switch Version (GR2PWS) |
|---|---|---|---|
| Voltage Gamma | AC50-320V | AC50-320V | AC50-320V |
| Intervallo attuale | 0~100A | 0~100A | 0~100A |
| Intervallo di potenza | 0~32000W | 0~32000W | 0~32000W |
| Gamma di energia | 0~999999Kwh | 0~999999Kwh | 0~999999Kwh |
| Fattore di potenza | 0.00~1.00PF | 0.00~1.00PF | 0.00~1.00PF |
| Gamma di frequenza | Frequenza | Frequenza | Frequenza |
| Precisione della misurazione | Class 1.0 (active power meter) | Class 1.0 (active power meter) | Class 1.0 (active power meter) |
| Statistiche sull'elettricità | Nessuno | Daily/Monthly/Yearly Report | Daily/Monthly/Yearly Report |
| Temperature /Calendar | Nessuno | Need Connect Network | Need Connect Network |
| WiFi Networking APP | Non supportato | Supporto | Supporto |
| Controllo vocale | Non supportato | Non supportato | Supporto |
| Interruttore relè integrato | Nessuno | Nessuno | Built-in Relay |
| Memoria di spegnimento | Supporto | Supporto | Supporto |
| Over-Voltage Protezione | Only Prompt | Only Prompt | Tagliato fuori |
| Protezione da sovracorrente | Only Prompt | Only Prompt | Tagliato fuori |
| Protezione da sovraccarico | Only Prompt | Only Prompt | Tagliato fuori |
| Sotto-Voltage Protezione | Only Prompt | Only Prompt | Tagliato fuori |
| Interruttore di perdita | Non supportato | Non supportato | Non supportato |
| Prepayment Function | Non supportato | Non supportato | Supporto |
| Single-fee Electricity Model | Supporto | Supporto | Supporto |
| Step Tariff Model | Supporto | Supporto | Supporto |
| Peak/Valley Electricity Tariff Model | Non supportato | Supporto | Supporto |
Image: Product technical parameters table comparing features across GR2P, GR2PW, and GR2PWS models.
Dimensions: 90.80mm (Length) x 69.80mm (Width) x 36.00mm (Height)
Temperatura di esercizio: da -10°C a +60°C
Display Type: Analog and Digital (Full view IPS high-definition color 26K resolution 240*240)
Certificazione: CE, RoHS
4. Configurazione e installazione
4.1 Installazione meccanica
The meter is designed for installation on a universal 35mm precision DIN rail. No screws or clips are needed for installation, making it convenient.

Image: Diagram showing the installation of the meter onto a 35mm DIN rail.
4.2 Cablaggio elettrico
Strictly follow the schematic diagram for wiring. Ensure correct wiring to prevent damage.

Image: Detailed wiring diagram showing connections for Entry Line (L, N), AC Input, N Input, L Input, N Output, L Output, and AC Output, with a circuit breaker and a light bulb as an exampil carico.
Fasi di cablaggio:
- Connect the Entry Line (L and N) to the appropriate terminals.
- Connect the AC Input to the meter's N Input and L Input terminals.
- Connect the AC Output from the meter's N Output and L Output terminals to your load, typically through a circuit breaker.
- Upon initial power-on, the built-in magnetic retention relay (for GR2PWS) will undergo a reset process, which may take more than ten seconds. During this time, the output will be maintained (delay protection). The meter will only enter normal operation and enable over-limit protection functions (overvoltage, sottovoltage, overcurrent, overpower) once the startup is complete and the measurement interface is displayed.
- It is recommended to connect an air switch (circuit breaker) at the output end and wait for the meter to fully start before turning on the air switch to your device.
4.3 Selezione della lingua
When first powered on, the meter will display a language selection interface. Use the "+" or "-" keys to select your desired language (e.g., English) and confirm with the "M" key. The selected language will be displayed on subsequent startups. If you accidentally choose the wrong language, long-press the "M" key to enter the background and select English. To restore the language reminder, reset to factory settings.

Image: Screenshots showing the language selection process on the meter's display, from initial prompt to English selection.
4.4 WiFi Connection (GR2PW/GR2PWS)
For WiFi versions (GR2PW, GR2PWS), follow these steps to connect to your network:
- Scarica l'App: Cercare "Tuya" or "Smart Life" in Google Play (Android) or Apple App Store (iOS) and install the app.
- Aggiungi dispositivo: Open the Smart Life app. After being powered on, the device's red light will flash and remain on, indicating it's in distribution network mode. The app will automatically prompt you to add a device. Click "Add".
- Inserisci le informazioni Wi-Fi: Select your working WiFi network and enter the password. Click "Next" to continue.
- Abbinamento completato: After pairing is successfully completed, click "Next".
- Telecomando: After a successful WiFi connection, multiple values can be set for remote control, and the app will automatically open, allowing you to connect via WiFi.

Image: Step-by-step guide for connecting the WiFi voltmeter to the network using the Smart Life app.
5. Istruzioni per l'uso
Il mio profilo
The meter features a full-color IPS display showing real-time voltage, current, power, energy consumption (kWh), frequency, power factor (PF), and CPU temperature. It also displays a voltage and current curve for the past 3 minutes, allowing for quick detection of abnormal power fluctuations.

Image: The meter's display showing voltage, current, power, energy, frequency, power factor, and CPU temperature, alongside a mobile app interface.
5.2 Remote Monitoring and Control (WiFi Versions)
For GR2PW and GR2PWS models, the Tuya or Smart Life app allows for remote monitoring and control:
- View electricity consumption data (daily, monthly, yearly reports).
- Monitora il volume in tempo realetage, corrente, potenza e consumo di energia.
- Access historical data and electricity usage curves.
- Set various parameters and receive notifications.

Image: Screenshots of the mobile app showing daily, monthly, and yearly electricity consumption reports, voltage curves, and real-time data.
5.3 Electricity Price Settings
The meter supports three electricity payment modes:
- Single Rate Electricity Price: Set a single price per kWh.
- Tiered Electricity Prices: Set different prices based on consumption tiers (e.g., <200kWh, >1000kWh).
- Peak and Valley Electricity Prices: Set different prices for specific time segments (e.g., 00-07H, 07-11H, 11-19H, 19-00H).

Image: Visual representation of the three electricity price setting modes available on the meter's display.
5.4 Overlimit Settings and Alarms
The meter provides dual alarms and four prompts for safer electricity consumption:
- oltre il volumetage (OVT)
- Over Current (OCT)
- Over Power (OPT)
- Sotto il volumetage (LVT)
For GR2P and GR2PW versions, these are prompt alarms only. For the GR2PWS version, these alarms can also trigger a power cut-off via the built-in relay.

Image: Displays showing different alarm conditions (over voltage, over current, over power, low voltage tips) on the meter.
5.5 Delayed Recovery (GR2PWS)
The GR2PWS model allows you to set a recovery time (1-99 minutes) for undervoltage e overvoltage conditions. When the voltage returns to normal, power supply will be restored automatically after the set delay.
5.6 Prepayment Function (GR2PWS)
The GR2PWS model supports a prepayment function. You can recharge the quantity of electricity (kWh) via the app. If the remaining energy is insufficient, the meter will automatically prompt. If the remaining power capacity reaches zero or the pre-paid switch is turned off, power will be disconnected.

Image: Mobile app interface showing the prepayment switch, energy charge, and balance energy features.
5.7 Electric Energy Data Zero Function
You can reset the accumulated energy data to zero either remotely via the mobile app or manually on the device. To reset manually, press and hold the 'M' key to enter the background, select 'Clear Accumulated Data', and then confirm.

Image: Screenshots showing the 'Data Zero' option in the app's setup menu and a visual of the meter's menu for clearing data.
5.8 Alarm Event Notification Settings (GR2PW/GR2PWS)
For WiFi versions, you can set up alarm notifications in the app:
- Nell'app, vai su "Smart" o "Automazione".
- Click the '+' icon to create a new scene/automation.
- Select 'When device status changes' and choose your meter.
- Select the specific fault (e.g., 'over voltage alarm').
- Under 'Then', click '+' and choose 'Send notification' or 'Message Center'.
- Configure the notification method (e.g., Message Center).
- Salva l'automazione.

Image: Screenshots illustrating the steps to set up over-voltage alarm notifications in the mobile app.

Image: A mobile phone screen displaying an 'over voltage alarm' notification.
5.9 Firmware Upgrade (WiFi Versions)
New firmware versions are released periodically. For WiFi versions, you can perform remote firmware upgrades via the app. Navigate to the device settings in the app, then 'device upgrade' and 'update' to install the latest firmware.

Image: A meter connected to WiFi, with a mobile phone displaying the firmware upgrade interface in the app.
5.10 Screen Flipping Function
The meter's screen can be flipped 360 degrees to accommodate different wiring methods (up/down, left/right). To activate, long-press the "M" key to enter the background, then short-press the "+" key to rotate the screen.

Image: Diagrams illustrating how the screen can be rotated 360 degrees to suit various installation orientations.
6. Manutenzione
- Mantenere il misuratore pulito e asciutto. Per la pulizia, utilizzare un panno morbido e asciutto.
- Evitare di esporre il dispositivo a temperature estreme, umidità o luce solare diretta.
- Non tentare di aprire o riparare il dispositivo da soli. Per l'assistenza, rivolgersi a personale qualificato.
- Controllare regolarmente i collegamenti dei cavi per verificarne la tenuta e l'eventuale presenza di segni di usura.
7. Risoluzione Dei Problemi
Problemi comuni e soluzioni:
- Il misuratore non si accende: Controllare i collegamenti di alimentazione e assicurarsi che il voltage is within the specified range (AC50-320V).
- Nessun dato visualizzato: Verify wiring is correct. For WiFi versions, ensure a stable WiFi connection.
- Problemi di connessione WiFi: Ensure your router is 2.4Ghz (5Ghz is not supported). Confirm Bluetooth and location permissions are enabled on your phone during pairing.
- Alarms but no power cut-off (GR2P/GR2PW): These models are designed to only prompt alarms and do not have a relay to cut off power.
- GR2PWS not automatically resetting after protection: The built-in magnetic retention relay requires a reset period (delay protection) upon initial power-on or after a power cut-off. Ensure the meter has fully started and the measurement interface is displayed before expecting automatic recovery. The recovery time for undervoltage/sopravoltage can be set in the device settings (1-99 minutes).
- Letture imprecise: Ensure the meter is correctly wired and that the current is unidirectional. This meter is not suitable for bidirectional current applications like solar grid-tie systems.
- Display always on/off: Check display brightness and standby time settings in the app or device menu.
- Cannot set dual-zone tariff: Ensure you are using a WiFi version (GR2PW/GR2PWS) as the basic GR2P model does not support this. Check the app's price mode settings for options to enter prices for different tariffs.
- Meter not compatible with 110V systems: The meter supports AC50-320V, so it is compatible with 110V/120V systems. For 2-phase 110V + neutral systems, it should work if connected as a single-phase load across two phases, but verify local electrical standards and consult a professional.
8. Suggerimenti per l'utente
- Download dell'app: For WiFi models, download "Tuya" or "Smart Life" app from Google Play or Apple App Store.
- Data Cloud: The data cloud service for monitoring is free.
- Shunt: The meter has a built-in 100A shunt, so no external Current Transformer (CT) is required.
- Memoria di spegnimento: Energy consumption data has power-off memory, ensuring your readings are saved even after a power outage. However, the switch mode (for GR2PWS) does not have power-off memory; the relay will close upon power restoration.
- Sezione trasversale del cavo: Ensure your cables (e.g., 16mm²) are compatible with the device's terminals and local electrical standards.
- Fattore di potenza (PF): The meter displays Power Factor, which indicates the efficiency of your electrical system. A PF closer to 1.00 is generally better.
- Integrazione domotica: While the WiFi versions integrate with Tuya/Smart Life, direct integration with other home automation systems like Home Assistant may require custom solutions or third-party bridges, which are not officially supported by the manufacturer.
9. Garanzia e supporto
This product is certified with CE and RoHS standards. For any technical support or warranty claims, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.





