Shelly Pro 3EM 120A
#3 in Whole-homeFull review
The first-generation Pro 3EM with a longer warranty; buy the v2 if you want Matter.
Amazon $153.33$153.33
None in box (up to 3)±1%
7 Shelly energy monitors ranked. Each one is scored and ranked against every brand in its type, so "#3 mid-size" means third of all mid-size energy monitors here, not third among Shelly's own.
Shelly makes 7 current energy monitors: 7 whole-home. Prices run from $69.99 for the Shelly EM Gen3 to $329.99 for the Shelly Pro 3EM 400A. Its best-rated model: the Shelly Pro 3EM 120A (#3 of 18 whole-home, rated 3.4).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Shelly energy monitors 7
- Shelly Pro 3EM 120A#3 whole-homeFull review
The first-generation Pro 3EM with a longer warranty; buy the v2 if you want Matter.
Amazon $153.33$153.33None in box (up to 3)-±1% - Shelly Pro 3EM 120A v2#4 whole-homeFull review
A DIN-rail meter for installers and tinkerers who want local control and solar metering.
Amazon $154.99$154.99None in box (up to 3)Local±1% - Shelly EM Gen3#5 whole-homeFull review
An inexpensive meter for a single circuit you care about, such as a sub-panel or heat pump.
Amazon $69.99$69.99None in box (up to 2)-- - Shelly Pro 3EM 3CT63#6 whole-homeFull review
A tidy 63A three-phase meter for small sub-panels.
Amazon $150.99$150.99None in box (up to 3)-- - Shelly 3EM-63W Gen3#7 whole-homeFull review
A budget three-phase meter for a small installation.
Amazon $114.99$114.99None in box (up to 3)-- - Shelly Pro 3EM 400A#8 whole-homeFull review
Only worth it if your service is above 120A and the 400A sensors are confirmed with the seller.
Amazon $329.99$329.99None in box (up to 3)-±1% - Shelly Pro EM 50A#10 whole-homeFull review
Good for monitoring and switching a pair of big loads such as an EV charger and a water heater.
Amazon $119.99$119.99None in box (up to 2)--
