Skip to product information
1 of 3

Shelly Pro EM-50 WiFi relay electricity meter 2x 50A + 2 terminals measuring function PV

Shelly Pro EM-50 WiFi relay electricity meter 2x 50A + 2 terminals measuring function PV

Umsatzsteuerfreie Lieferung nach § 12 Abs. 3 UstG
Regular price €84,03 EUR
Regular price €0,00 EUR Sale price €84,03 EUR
Sale Sold out
inkl. 0% MwSt. Shipping calculated at checkout.

In stock - Delivery time 1-3 working days

The following requirements must be met:

  • My delivery address is in Germany.
  • The installation will only take place if the photovoltaic system is installed on or near my private residence, apartments and public and other buildings that are used for activities serving the common good.
  • I confirm that the installed gross output of the photovoltaic system is or will be no more than 30 kW (peak) according to the Market Master Data Register (MaStR).
  • I am the operator of the photovoltaic system. The ordered goods will not be resold commercially.
  • I confirm that the components ordered are used exclusively to utilize the electricity generated by solar modules for energy management.
  • I expressly confirm that all the information I have provided is true. I am aware that I am fully liable for any false statements.

*VAT-Free delivery according to Section 12 (3) UStG.

Since January 1, 2023, photovoltaic products have been freed from VAT based on a funding measure. As a result, private individuals receive significant tax relief when buying solar products to promote solar energy.

The following requirements must be met:

  • My delivery address is located in Germany.
  • The installation is only carried out if the photovoltaic system is installed on or near my private apartment, apartments as well as public and other buildings that are used for the common good. Margin-Left: -1.5EM; "> I confirm that the installed gross performance of the photovoltaic system according to the market master data register (mastr) is no more than 30 kW (peak). -1.5em; "> I am the operator of the photovoltaic system. The ordered goods are not resold.
  • I confirm that the components ordered only serve to use the electricity generated with solar modules for energy management. < /Li>

By ordering this VAT, I confirm that the delivery takes place in accordance with Section 12 (3) UStG free of VAT and the requirements for the tax rate of 0% are met. If it turns out afterwards that these requirements do not template contrary to the confirmation, I agree that the insufficient sales tax will be invoiced afterwards. The missing VAT amount is then due immediately.

Please note that orders with company address or multiple orders that exceed the maximum order quantity 2 pieces are canceled and the purchase amount is reimbursed.

For the smooth process, we ask you to consult questions or ambiguities before buying. Thank you.

You can view further information in the document from the Federal Ministry of Finance:

Nullsteuersatz für Umsätze im Zusammenhang mit bestimmten Photovoltaikanlagen

Article description:

Smart WiFi electricity meter for 2 phases

Shelly Pro EM-50 is a DIN rail mountable two-channel, single-phase energy meter. It has an integrated switch with dry contacts for contactor control.

Your Smart Solution for Accurate Energy Monitoring and Control: Shelly Pro EM-50 is a DIN-mountable 1-Phase Energy Meter with an integrated switch for contactor control. With active energy measurement accuracy of 1%, Shelly Pro ЕМ-50 can be used to monitor the consumption of and control any home appliances, electric circuits, and office equipment. It features 60 days of on-device historical data with a 1-minute resolution. Additionally, its scripting functionalities allow for the execution of complex scenes and provide broader monitoring abilities.

Renewable energy ecosystem at home​: If you have a photovoltaic system (PV) at home, Shelly PRO EM-50 can help you measure grid and imported energy from renewable sources. Moreover, it has configurable load control, which allows you to redirect any excess energy generated from renewable sources to electronic devices at your home and optimize your energy consumption. For example, you can use Shelly PRO EM-50 for charging your car or home appliances when your PV system provides excess energy. ​

Perfect for SMB owners​l: If you are a small or medium-sized business owner, you have probably struggled with energy overconsumption. Some machines and appliances are switched on all the time. With Shelly PRO EM-50, you can measure with utmost precision and reduce consumption by turning off load - water dispensers, laminating machines and lighting, during the night. The smart device can also be applied for preventative measurement by monitoring for abnormal behavior of HVAC, air compressors, refrigerator units and others.

- LAN, Wi-Fi and Bluetooth connection for high security and reliability

- Reports accumulated energy, as well as instantaneous voltage, current, active and apparent power per phase in real time

- Power metering - two independent measurement channels on the same phase

- 4 Quadrant measurement with optical pulse indication of energy usage

- Accuracy Class B (IEC 62053-21)

- Photovoltaic ready

- Stores data in non-volatile memory that can be retrieved for a period of up to 60 days in 1-minute intervals.

- No hub required! Easy control through the Shelly Smart Control app, most platforms and protocols, as well as voice assistants. Use it with Alexa, Home Assistant, or your preferred automation system.

- Supports scripting, webhooks, MQTT, WebSocket, HTTPS, UDP, TLS and custom certificates & Modbus TCP protocol

Technical data:


Size (HxWxD): 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in

Weight: 63 ±1 g / 2.22 ±0.05 oz

Mounting: DIN rail

Screw terminals max torque: 0.4 Nm / 4.43 lbin

Conductor cross section: 0.5 to 2.5 mm² / 20 to 14 AWG (solid, stranded and bootlace lugs)

Conductor stripped length: 6 to 7 mm / 0.24 to 0.28 in

Shell material: Plastic

Color: White


Ambient temperature: -20 °C to 40 °C / -5 °F to 105 °F

Humidity: 30 % to 70 % RH

Max. altitude: 2000 m / 6562 ft


Power supply voltage AC: 110 - 240 V, 50/60 Hz

Power supply voltage DC: N/A

Power consumption: < 3 W

Max switching voltage AC: 240 V

Max switching voltage DC: N/A

Max switching current: 2 A


Internal temperature sensor: Yes

Voltmeter (RMS): 100 - 260 V

Voltmeters accuracy: ±1 %

Ammeters (RMS via CT): 0 - 50 A

Ammeters accuracy: ±1 % (5 - 50 A), ±2 % (0 - 5 A)

Power and energy meters: Active and apparent power, active and apparent energy, power factor

No load threshold: 30 VA per phase

Measurement data storage: At least 60 days of 1-min data resolution

Data export: CSV for PQ recorded values, JSON format export through RPC


RF band: 2400 - 2495 MHz

Max. RF power: <20 dBm

Wi-Fi protocol: 802.11 b/g/n

Wi-Fi Range: Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors (Depends on local conditions)

Bluetooth Protocol: 4.2

Bluetooth Range: Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (Depends on local conditions)



Flash: 16 MB


Webhooks (URL actions): 20 with 5 URLs per hook

Scripting: Yes


CoAP: No

Further information:


Brand newimmediately available
View full details