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Product description
Switch Expansion
Shelly Pro 3EM Switch Add-on is created to provide switch functionality for the Shelly Pro 3EM device. It contains dry contact relay that can commutate up to 2A for controlling a contactor.
Load Shedding
Track solar and wind energy with Shelly Pro 3EM Add-on. Control consumption, monitor real-time energy data, and auto-switch off non-essential appliances for energy savings.
Weather-Based Control
Enhance Shelly Pro 3EM with the Add-on for weather-driven energy optimization. Script appliance control based on real-time weather updates. For instance, auto-adjust heating for sunny days.
PV Systems Balancing
Shelly Pro 3EM Add-On optimizes excess PV energy by automatically activating appliances like water heaters or EV charging stations. Maximize solar energy use and reduce grid dependency.
Size (HxWxD): 94x19x69 ±0.5 mm / 3.70×0.75×2.71 ±0.02 in Weight 20 ±1 g / 0.70 ±0.05 oz Mounting DIN rail, attached to a Shelly Pro 3EM 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 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 DC 3.3 V and 12 V (from Shelly Pro 3EM device) Power consumption < 1 W Max switching voltage AC 240 V Max switching voltage DC 30V Max switching current AC 2A Max switching current AC 2A
Shelly Comparison Table
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Customer Reviews
4.6 out of 5 stars 79
4.7 out of 5 stars 2,382
4.4 out of 5 stars 19
4.5 out of 5 stars 2,333
Price
$34.99$34.99
$123.99$123.99
$234.29$234.29
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Functions
Switching and triggering
Real-time energy monitoring
Real-time energy monitoring
Real-time energy monitoring
Additional functions
Boost Shelly Pro 3EM features
Measures up to 120 A per phase
Measures up to 400 A per phase
Measure energy consumption
Power Supply
DC
AC
AC
AC
Inputs
1 input
3 inputs
3 inputs
3 Inputs
Outputs
1 Channel
2 Channels
2 Channel
3 Channels
Wi-Fi and Bluetooth
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✔
✔
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The Shelly Pro 3EM Switch Add-On is an add-on for Shelly Pro 3EM. An electrically isolated switch that extends the functions of your Shelly Pro 3EM device. With this add-on, you can easily control contactors and other electrical devices, giving you more flexibility and control over your consumption.
Load shedding – Keep track of how much energy your solar panels and wind turbines are generating and save effortlessly by controlling your consumption with the Shelly Pro 3EM add-on. Connect the Shelly Pro add-on to your devices and use Shelly Pro 3EM’s real-time information on how much energy has been generated and consumed. When you need to save energy.
PV system balancing – If your PV system is producing more energy than your home is consuming, the Shelly Pro 3EM add-on can automatically activate devices to use it. For example, you can set it to turn on your water heater, electric vehicle charging station or other energy-intensive appliances.
Shelly Customer Service – Shelly is one of the fastest-growing IoT brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 5 years device warranty.
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.
$34.99