The Decision: Circuit-Level Detail or Solar-Ready Simplicity
When you are trying to find out which appliance is driving your electric bill, energy management usually comes down to how much detail you want at the breaker panel. The first option is a new monitor built around 16 50A circuit-level sensors. The second is an open-box but unused Sense SM2 bundled with solar-sensor clamps. Both are real alternatives, and the difference is more than the $21.92 between their listed prices.
Quick Verdict
Choose the Smart Home Energy Monitor with 16 50A Circuit Level Sensors if you want a new unit with many circuit-level sensors plus two 200A sensors. Choose the UNUSED Sense SM2 Home Energy Monitor System w/ Sense Solar Sensors if you want solar clamps, Wi-Fi, Alexa compatibility, and the lower listed price.
Listed Price and Included Clamps at a Glance
| Product | Listed price | Price bar | Key differences |
|---|---|---|---|
| Smart Home Energy Monitor with 16 50A Circuit Level Sensors | USD 221.91 | New unit; 16 50A circuit-level sensors; two 200A circuit-level sensors; single-phase, split-phase, and three-phase support | |
| UNUSED Sense SM2 Home Energy Monitor System w/ Sense Solar Sensors | USD 199.99 | Open-box unused; Wi-Fi; Amazon Alexa compatible; two CT150 main clamps plus two solar sensor clamps |
Where Each Monitor Wins
- The Smart Home Energy Monitor with 16 50A Circuit Level Sensors is the stronger pick for owners who want a new unit with a broad sensor package. The kit includes 16 50A circuit-level sensors, and the included components also cover two 200A circuit-level sensors. It is listed at $221.91.
- The UNUSED Sense SM2 Home Energy Monitor System w/ Sense Solar Sensors is the stronger pick for solar-focused households. It comes with two CT150 main clamps and two solar sensor clamps, giving you four CT clamps total, and its listed price is $199.99.
Smart Home Energy Monitor with 16 50A Circuit Level Sensors
At $221.91, this is the higher listed price, and the sensor package is the reason. The kit includes 16 50A circuit-level sensors, and the included components add two 200A circuit-level sensors, so there is coverage for a panel with many individual circuits and a pair of main feeds. The clamp-on design installs in the circuit panel of most homes, with support for single-phase, split-phase, and three-phase wiring. The unit is new, black, and does not require batteries. The trade-off is that there are no solar-sensor clamps in this kit, and the listed price is about $22 more than the Sense SM2. If circuit-by-circuit visibility on a brand-new unit matters more than solar monitoring, this is the model to favor.
UNUSED Sense SM2 Home Energy Monitor System w/ Sense Solar Sensors
The Sense SM2 here is open-box, has never been installed or connected, and is listed at $199.99. It connects over Wi-Fi and is compatible with Amazon Alexa. The deciding feature for many shoppers is the clamp set: two CT150 main current sensor clamps plus two Sense solar sensor clamps, for four CT clamps total. That makes it a natural fit for a home with solar panels or planned solar. Original packaging is included, but it shows visible storage and shelf wear, which is the main limitation. This unit is not factory-fresh in appearance even though the components are unused. For a solar-ready monitor that costs less upfront, the open-box condition is a reasonable trade.
Final Choice by Use Case
- Pick the Smart Home Energy Monitor with 16 50A Circuit Level Sensors when you want a brand-new monitor, a large set of circuit-level sensors, and the $221.91 listed price is acceptable.
- Pick the UNUSED Sense SM2 Home Energy Monitor System w/ Sense Solar Sensors when you want solar clamps, a $199.99 listed price, and you are comfortable with an unused open-box unit.
