APsystems DS3-S
#5 in Two panelFull review
A two panel unit for smaller 300 to 350 W panels. Most buyers should get the DS3-L, which costs less.
APsystems $205 US Solar Supplier $195$195
3.6/5
The cheapest way per watt to run pairs of 300 W class panels, but confirm the warranty with the seller before buying.
- 580 WAC output
- 2Panels
- YesUL 1741
Check price at Signature Solar$100
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- The lowest price per watt here
- Two panels per unit halves the inverters to mount
- Meets rapid shutdown
Cons
- No published US warranty term for this model
- 580 W continuous clips a pair of panels over about 300 W each
- Monitoring needs a separate gateway
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its panel count. How we rank explains each one.
Specifications
| Model number | BDM-600X |
|---|---|
| Output | |
| Panel inputs | 2 |
| AC output | 580 W |
| Grid voltage | 240 V split phase or 208 V |
| CEC efficiency | 96.5% |
| Panel input | |
| Largest panel | 450 W |
| Current per input | 14 A |
| MPPT range | 22 to 55 V |
| Listing and build | |
| UL 1741 | Yes |
| Rapid shutdown | Yes |
| Monitoring | power line to a gateway |
| Enclosure | IP67 (NEMA 6) |
| Weight | 6.4 lb |
Alternatives in this panel count
Hoymiles HMS-800-2T-NA
#6 in Two panelFull review
A two panel unit for 360 to 420 W panels. At the same price the HMS-1000 is the better buy unless your panels are small.
Self2Solar $269$269
APsystems EZ1-LV
#8 in Two panelFull review
For a small two panel system that plugs into an outlet circuit where your utility allows it. For a permanent roof array, a 240 V unit has a longer warranty and better efficiency.
APsystems $325 Shop Solar Kits $299 US Solar Supplier $299.99$299
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