

⚡ Power your smart space with precision and control!
The SDM120 Modbus is a compact, single-phase multifunction energy meter rated for 45A low-load circuits. It delivers real-time monitoring of active/reactive energy, voltage, current, power, and frequency via a clear backlit LCD. Featuring Modbus RS485 communication, it integrates seamlessly into smart energy systems, enabling precise energy management and cost-saving insights. Designed for easy DIN rail installation, it’s the go-to meter for professionals seeking reliable, accurate energy data in compact form.










| ASIN | B08X8SD1FD |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 74,919 in DIY & Tools ( See Top 100 in DIY & Tools ) 44 in Power Monitors |
| Colour | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (308) |
| Date First Available | 23 Feb. 2021 |
| Included Components | no components |
| Item Weight | 90 g |
| Item model number | SDM120-MODBUS-MID |
| Manufacturer | Eastron |
| Part Number | SDM120-MODBUS-MID |
| Product Dimensions | 10 x 7 x 8 cm; 90 g |
| Style | SDM120-MODBUS-MID |
W**.
Really easy to fit. Great product.
I fitted this to sub-meter my business workshop, which is supplied from the house consumer unit. I housed it in the workshop CU - a really easy fit as this unit has a good quality locking slider for the DIN rail. Just remember you will ideally want to position next to the main switch/rcd and alter the live busbar such that all the breakers are fed from the live out out of this unit.
S**.
Fits consumer unit but cut back the live conductor lugs.
These units are easy to fit and give a good indication of the KWh consumed through them. They fit on the DIN rail but will require the live conductor lugs cutting off. The units have cable connections in and out. They are rated to 45amps, I’m using them in supplies rated to 40amps.
A**R
Jus as described and easy to fit
Great
D**N
Works well, slightly tricky to fit
Does what it needs to as a meter, and is a good fit in my installation. In my case that's in the consumer unit in an outbuilding that I wanted to know the specific electricity usage for. Fitting was OK, but per the photo I did need to bend the consumer unit's bus bar a little as the screw terminal locations in this meter were staggered relative to the standard MCBs to be fed from it. The screw terminals are of course also eccentric across the meter as there are two side by side in the 1U width meter, and they're also thinner than the bus bar was. Not insurmountable in this case, but perhaps a differing standard somehow. As far as the meter in use, it works perfectly (as far as I can tell for accuracy anyway) and has been very handy.
C**E
size
fits perfect as same size as a standard breaker
J**S
Easy to install
Spot on works as described by seller
G**H
Dangerous product!
Connected with 6mm cable to a 32A single phase socket for an EV charger. The unit melted within 2 months. Not fit for the amperage advertised. Cable connections look good. The burning appears to have started internally.
G**S
Excellent, great customer service
Good product
J**N
perfect
S**K
Deze is officieel goed gekeurd in mijn land. Deze heb ik mijn boot gemonteerd zodat ik kan controleren wat mijn verbruik is .. Maar ook dat ik de haven kan controleren. Met een notitie boekje houd ik bij wat word gebruikt Als ik van haven naar haven verplaatst.
A**O
Semplici economici direi perfetti
A**E
Très bon
L**S
fonctionne très bien aucun souci
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