Shelly Pro EM 50A Wi-Fi LAN Energy Meter with Contactor Control DIN-Rail Home Automation Bluetooth Gateway Compatible with

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  "title": "Shelly Pro EM 50A Wi-Fi LAN Energy Meter with Contactor Control DIN-Rail Home Automation Bluetooth Gateway Compatible with",
  "title_original": "Shelly Pro EM 50A | Wi-Fi & LAN Energy Meter with Contactor Control | DIN-Rail | Home Automation | Bluetooth Gateway | Compatible with Alexa & Google Home | No Hub Required | Power Monitoring",
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    "Shelly Pro EM 50A is a Wi-Fi energy meter with contactor control and LAN connectivity. Designed for DIN rail mounting, this single-phase, dual-channel energy meter comes with an integrated switch featuring potential-free contacts for precise contactor control. The package includes two 50A current transformers for accurate energy measurement. Additionally, it functions as a Bluetooth gateway, enhancing smart home integration and connectivity.",
    "Perfect for SMB owners - If you own a small or medium-sized business, chances are you've struggled with excessive energy consumption at some point. Some machines and equipment are on all the time. With the Shelly PRO EM-50 you can measure and reduce consumption with the highest precision by switching off consumers such as water dispensers, laminators and lights at night.",
    "Home Renewable Energy Ecosystem - If you have a photovoltaic (PV) system at home, the Shelly PRO EM-50 can help you meter grid and imported energy from renewable sources. It also features configurable load control, allowing you to redirect excess energy from renewable sources to electronic devices in your home, optimizing your energy use.",
    "Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation."
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  "category": "Industrial & Scientific > Test, Measure & Inspect > Electrical Testing > Power Meters",
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  "reviews": {
    "average_rating": 4.6,
    "customers_say": "Customers find the energy meter works well, with one mentioning it can be rebooted from Home Assistant. Customers appreciate its ease of installation, with one noting it requires no programming.",
    "items": [
      {
        "title": "5.0 out of 5 stars Works perfectly and easy to install / setup",
        "body": "Excellent product and easy installation. Allows me to monitor a remote condo and keep tabs on the HVAC and power consumption. The app is well polished and provides all the information and control you would expect with this device Read more",
        "author": "Tom",
        "rating": 5,
        "date": "January 18, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Cool power monitor/relay great interfaces",
        "body": "Outstanding piece of kit. WiFi and wired Ethernet, web, JSON, Matter, Modbus and more all built in. Mine worked right out of the box. Got ic controlled via the web and MODBUS TCP. Handy device priced right. Read more",
        "author": "Doug A",
        "rating": 5,
        "date": "February 6, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Pro level current meter at a bargain price!",
        "body": "Fantastic current meter! The bonus is built in Ethernet! Small size will fit in tight spaces and easy install. Great function, except for some reason data download is not working right. There is also connection point for 1 more CT, but last I checked it is not sold separately. AND I wish there was short piece of DIN rail in box. Read more",
        "author": "CuriousJoe",
        "rating": 5,
        "date": "July 12, 2025",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars WOW",
        "body": "I love it. Definitely is the amazing device and so easy to install. Perfect size. The connectivity is so great. Read more",
        "author": "Guillermo M.",
        "rating": 5,
        "date": "February 19, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "4.0 out of 5 stars Works great when integrated with HomeAssistant",
        "body": "Great product generally, although there are a couple issues with the REST API if you're trying to write your own code to control it. Bad SSL certificate for https, and it rejects https requests anyway with a 443 error, yet it also does a strange redirect to https when you call http on port 80. I tried updating the firmware but issue remains. Integrated with HomeAssistant and called that API instead, which works great. Would be 5 stars if not for the odd issues with restful calls. Read more",
        "author": "Dave",
        "rating": 4,
        "date": "January 2, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Excellent tool to keep historical power usage.",
        "body": "Monitoring various branches of my inverted AC outputs to various appliances. Works great and is very accurate. These measurements are logged on charts for historical monitoring. Easy install and no programming needed. Read more",
        "author": "Bill Burton",
        "rating": 5,
        "date": "February 26, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Great product",
        "body": "Worth the value, high quality and reliable Read more",
        "author": "Mohammed Ben-Hussain",
        "rating": 5,
        "date": "January 28, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars 👍",
        "body": "Easy to install and does what it claims to do.. Read more",
        "author": "Guy Sheffi",
        "rating": 5,
        "date": "February 14, 2026",
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  "short_description": "Product description Previous page Commercial Building Optimization Monitor power consumption of devices and circuits to identify high energy users. Use Shelly Pro EM-50 for contactor control, turning off appliances at night to save energy.​ Industrial Power Monitoring Deploy Shelly Pro EM-50 in industrial installations to monitor energy usage and ensure machinery operates within safe parameters, preventing downtime and equipment damage.​ Smart Office Management Use Shelly Pro EM-50 to detect high-energy consumption devices in your office. Combine with smart devices to automate lighting, HVAC, and systems, improving efficiency and reducing costs.​ Renewable Energy If you have a photovoltaic system at home, Shelly measures grid and renewable energy. Use load control to.",
  "about_this_item": "Product description Previous page Commercial Building Optimization Monitor power consumption of devices and circuits to identify high energy users. Use Shelly Pro EM-50 for contactor control, turning off appliances at night to save energy.​ Industrial Power Monitoring Deploy Shelly Pro EM-50 in industrial installations to monitor energy usage and ensure machinery operates within safe parameters, preventing downtime and equipment damage.​ Smart Office Management Use Shelly Pro EM-50 to detect high-energy consumption devices in your office. Combine with smart devices to automate lighting, HVAC, and systems, improving efficiency and reducing costs.​ Renewable Energy If you have a photovoltaic system at home, Shelly measures grid and renewable energy. Use load control to redirect excess energy to car chargers and appliances, optimizing energy consumption. Next page Size (HxWxD): 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in Mounting DIN rail Ambient temperature -20 °C to Shelly Pro EM 50A is a Wi-Fi energy meter with contactor control and LAN connectivity. Designed for DIN rail mounting, this single-phase, dual-channel energy meter comes with an integrated switch featuring potential-free",
  "long_description": "Product description Previous page Commercial Building Optimization Monitor power consumption of devices and circuits to identify high energy users. Use Shelly Pro EM-50 for contactor control, turning off appliances at night to save energy.​ Industrial Power Monitoring Deploy Shelly Pro EM-50 in industrial installations to monitor energy usage and ensure machinery operates within safe parameters, preventing downtime and equipment damage.​ Smart Office Management Use Shelly Pro EM-50 to detect high-energy consumption devices in your office. Combine with smart devices to automate lighting, HVAC, and systems, improving efficiency and reducing costs.​ Renewable Energy If you have a photovoltaic system at home, Shelly measures grid and renewable energy. Use load control to redirect excess energy to car chargers and appliances, optimizing energy consumption. Next page Size (HxWxD): 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in Mounting DIN rail Ambient temperature -20 °C to 40 °C / -5 °F to 105 °F Power supply voltage AC 110 - 240 V, 50/60 Hz Power consumption < 3 W Internal-temperature sensor Yes Voltmeters (RMS for phase) 100 - 260 V Voltmeters accuracy ±1 % Power and energy meters Active and apparent power, Active and apparent energy, Power factor, Fundamental active and fundamental reactive energy Wireless/WiFi Protocol 802.11 b/g/n Wi-Fi Range Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors Bluetooth\n\nHighlights: Shelly Pro EM 50A is a Wi-Fi energy meter with contactor control and LAN connectivity. Designed for DIN rail mounting, this single-phase, dual-channel energy meter comes with an integrated switch featuring potential-free contacts for precise contactor control. The package includes two 50A current transformers for accurate energy measurement. Additionally, it functions as a Bluetooth gateway, enhancing smart home integration and connectivity. Perfect for SMB owners - If you own a small or medium-sized business, chances are you've struggled with excessive energy consumption at some point. Some machines and equipment are on all the time. With the Shelly PRO EM-50 you can measure and reduce consumption with the highest precision by switching off consumers such as water dispensers, laminators and lights at night. Home Renewable Energy Ecosystem - If you have a photovoltaic (PV) system at home, the Shelly PRO EM-50 can help you meter grid and imported energy from renewable sources. It also features configurable load control, allowing you to redirect excess energy from renewable sources to electronic devices in your home, optimizing your energy use. Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to\n\nWhat you can expect: Shelly Pro EM 50A is a Wi-Fi energy meter with contactor control and LAN connectivity. Designed for DIN rail mounting, this single-phase, dual-channel energy meter comes with an integrated switch featuring potential-free contacts for precise contactor control. The package includes two 50A current transformers for accurate energy measurement. Additionally, it functions as a Bluetooth gateway, enhancing smart home integration and connectivity. Perfect for SMB owners - If you own a small or medium-sized business, chances are you've struggled with excessive energy consumption at some point. Some machines and equipment are on all the time. With the Shelly PRO EM-50 you can measure and reduce consumption with the highest precision by switching off consumers such as water dispensers, laminators and lights at night. Home Renewable Energy Ecosystem - If you have a photovoltaic (PV) system at home, the Shelly PRO EM-50 can help you meter grid and imported energy from renewable sources. It also features configurable load control, allowing you to redirect excess energy from renewable sources to electronic devices in your home, optimizing your energy use. Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation.\n\nCustomer feedback: 4.6/5 average rating.\n\nCustomers say: Customers find the energy meter works well, with one mentioning it can be rebooted from Home Assistant. Customers appreciate its ease of installation, with one noting it requires no programming.\n\nReview snippets: Excellent product and easy installation. Allows me to monitor a remote condo and keep tabs on the HVAC and power consumption. The app is well polished and provides all the information and control you would expect with this device Read / Outstanding piece of kit. WiFi and wired Ethernet, web, JSON, Matter, Modbus and more all built in. Mine worked right out of the box. Got ic controlled via the web and MODBUS TCP. Handy device priced right. Read more\n\nProduct description Previous page Commercial Building Optimization Monitor power consumption of devices and circuits to identify high energy users. Use Shelly Pro EM-50 for contactor control, turning off appliances at night to save energy.​ Industrial Power Monitoring Deploy Shelly Pro EM-50 in industrial installations to monitor energy usage and ensure machinery operates within safe parameters, preventing downtime and equipment damage.​ Smart Office Management Use Shelly Pro EM-50 to detect high-energy consumption devices in your office. Combine with smart devices to automate lighting, HVAC, and systems, improving efficiency and reducing costs.​ Renewable Energy If you have a photovoltaic system at home, Shelly measures grid and renewable energy. Use load control to redirect excess energy to car chargers and appliances, optimizing energy consumption. Next page Size (HxWxD): 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in Mounting DIN rail Ambient temperature -20 °C to 40 °C / -5 °F to 105 °F Power supply voltage AC 110 - 240 V, 50/60 Hz Power consumption < 3 W Internal-temperature sensor Yes Voltmeters (RMS for phase) 100 - 260 V Voltmeters accuracy ±1 % Power and energy meters Active and apparent power, Active and apparent energy, Power factor, Fundamental active and fundamental reactive energy Wireless/WiFi Protocol 802.11 b/g/n Wi-Fi Range Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors Bluetooth Range Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors Webhooks (URL actions): 20 with 5 URLs per hook Scripting and MQTT Yes Shelly Comparison Table Shelly Pro EM 50 Add to Cart Shelly",
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      "text": "Product description Previous page Commercial Building Optimization Monitor power consumption of devices and circuits to identify high energy users. Use Shelly Pro EM-50 for contactor control, turning off appliances at night to save energy.​ Industrial Power Monitoring Deploy Shelly Pro EM-50 in industrial installations to monitor energy usage and ensure machinery operates within safe parameters, preventing downtime and equipment damage.​ Smart Office Management Use Shelly Pro EM-50 to detect high-energy consumption devices in your office. Combine with smart devices to automate lighting, HVAC, and systems, improving efficiency and reducing costs.​ Renewable Energy If you have a photovoltaic system at home, Shelly measures grid and renewable energy. Use load control to redirect excess energy to car chargers and appliances, optimizing energy consumption. Next page Size (HxWxD): 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in Mounting DIN rail Ambient temperature -20 °C to 40 °C / -5 °F to 105 °F Power supply voltage AC 110 - 240 V, 50/60 Hz Power consumption < 3 W Internal-temperature sensor Yes Voltmeters (RMS for phase) 100 - 260 V Voltmeters accuracy ±1 % Power and energy meters Active and apparent power, Active and apparent energy, Power factor, Fundamental active and fundamental reactive energy Wireless/WiFi Protocol 802.11 b/g/n Wi-Fi Range Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors Bluetooth"
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      "text": "Highlights: Shelly Pro EM 50A is a Wi-Fi energy meter with contactor control and LAN connectivity. Designed for DIN rail mounting, this single-phase, dual-channel energy meter comes with an integrated switch featuring potential-free contacts for precise contactor control. The package includes two 50A current transformers for accurate energy measurement. Additionally, it functions as a Bluetooth gateway, enhancing smart home integration and connectivity. Perfect for SMB owners - If you own a small or medium-sized business, chances are you've struggled with excessive energy consumption at some point. Some machines and equipment are on all the time. With the Shelly PRO EM-50 you can measure and reduce consumption with the highest precision by switching off consumers such as water dispensers, laminators and lights at night. Home Renewable Energy Ecosystem - If you have a photovoltaic (PV) system at home, the Shelly PRO EM-50 can help you meter grid and imported energy from renewable sources. It also features configurable load control, allowing you to redirect excess energy from renewable sources to electronic devices in your home, optimizing your energy use. Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to"
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      "text": "What you can expect: Shelly Pro EM 50A is a Wi-Fi energy meter with contactor control and LAN connectivity. Designed for DIN rail mounting, this single-phase, dual-channel energy meter comes with an integrated switch featuring potential-free contacts for precise contactor control. The package includes two 50A current transformers for accurate energy measurement. Additionally, it functions as a Bluetooth gateway, enhancing smart home integration and connectivity. Perfect for SMB owners - If you own a small or medium-sized business, chances are you've struggled with excessive energy consumption at some point. Some machines and equipment are on all the time. With the Shelly PRO EM-50 you can measure and reduce consumption with the highest precision by switching off consumers such as water dispensers, laminators and lights at night. Home Renewable Energy Ecosystem - If you have a photovoltaic (PV) system at home, the Shelly PRO EM-50 can help you meter grid and imported energy from renewable sources. It also features configurable load control, allowing you to redirect excess energy from renewable sources to electronic devices in your home, optimizing your energy use. Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation."
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      "text": "Customer feedback: 4.6/5 average rating."
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      "text": "Customers say: Customers find the energy meter works well, with one mentioning it can be rebooted from Home Assistant. Customers appreciate its ease of installation, with one noting it requires no programming."
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      "text": "Review snippets: Excellent product and easy installation. Allows me to monitor a remote condo and keep tabs on the HVAC and power consumption. The app is well polished and provides all the information and control you would expect with this device Read / Outstanding piece of kit. WiFi and wired Ethernet, web, JSON, Matter, Modbus and more all built in. Mine worked right out of the box. Got ic controlled via the web and MODBUS TCP. Handy device priced right. Read more"
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      "text": "Product description Previous page Commercial Building Optimization Monitor power consumption of devices and circuits to identify high energy users. Use Shelly Pro EM-50 for contactor control, turning off appliances at night to save energy.​ Industrial Power Monitoring Deploy Shelly Pro EM-50 in industrial installations to monitor energy usage and ensure machinery operates within safe parameters, preventing downtime and equipment damage.​ Smart Office Management Use Shelly Pro EM-50 to detect high-energy consumption devices in your office. Combine with smart devices to automate lighting, HVAC, and systems, improving efficiency and reducing costs.​ Renewable Energy If you have a photovoltaic system at home, Shelly measures grid and renewable energy. Use load control to redirect excess energy to car chargers and appliances, optimizing energy consumption. Next page Size (HxWxD): 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in Mounting DIN rail Ambient temperature -20 °C to 40 °C / -5 °F to 105 °F Power supply voltage AC 110 - 240 V, 50/60 Hz Power consumption < 3 W Internal-temperature sensor Yes Voltmeters (RMS for phase) 100 - 260 V Voltmeters accuracy ±1 % Power and energy meters Active and apparent power, Active and apparent energy, Power factor, Fundamental active and fundamental reactive energy Wireless/WiFi Protocol 802.11 b/g/n Wi-Fi Range Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors Bluetooth Range Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors Webhooks (URL actions): 20 with 5 URLs per hook Scripting and MQTT Yes Shelly Comparison Table Shelly Pro EM 50 Add to Cart Shelly"
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