Grid-Tied Solar Microinverter 800W with Dual MPPT and Wi-Fi (120V)

Small, grid-tied DIY solar with Wi-Fi monitoring.

This 800 W grid-tied microinverter (model WVC-800) converts DC power from one or two solar panels directly into AC power synchronized with the utility grid. Each input has its own MPPT, and built-in Wi-Fi lets you watch production in real time from the Smart Life app. It is commonly used by experienced DIYers, engineers, educators, and solar hobbyists for testing, demonstrations, and limited plug-in solar projects.

Not suitable for off grid or backup systems unless you already have a battery inverter. This device requires an active utility grid and will automatically shut down during a power outage.

Quick highlights

• Up to 800 W AC output at 120 V
• Two independent MPPT inputs, up to 500 W per panel
• Wide 22-60 V DC input window fits most modern residential panels
• Wi-Fi and Bluetooth monitoring with the Smart Life app
• IP65 weather-resistant, fanless aluminum enclosure

Datasheet: WVC-800 specification sheet (PDF)

Key Features

• Rated for up to 800 VA AC output
• Dual MPPT inputs (one per panel), 99.8% MPPT efficiency
• Automatic grid voltage and 50 / 60 Hz frequency detection
• Output power adjustable from the app
• Pure sine wave output, power factor above 0.99
• Built-in grid protection (over/under voltage, over/under frequency, anti-islanding)
• Over-temperature derating, current limit protection, and PV leakage detection
• Zero standby draw at night
• Multiple units can be daisy-chained on one AC run (handshake cable sold separately)

Electrical Specifications (AC Output)

• Maximum Output Power: 800 VA
• Nominal Output Voltage: 120 V AC (also supports 230 V)
• Rated Output Current: 6.6 A @ 120 V
• Frequency: 50 / 60 Hz (auto-detect)
• Power Factor: >0.99 default, adjustable 0.95 leading to 0.95 lagging
• Current Harmonic Distortion: <5%
• Peak Efficiency: 92.7% (CEC weighted 92.5%)

PV (DC) Input Specifications

• Maximum Input Power: 2 x 500 W
• MPPT Voltage Range (panel Voc): 30-60 V DC
• Working Voltage Range: 22-60 V DC
• Start-up Voltage: above 22 V DC
• Maximum Input Current: 2 x 18 A
• Maximum Input Short-Circuit Current: 2 x 20 A

Monitoring

• Connectivity: 2.4 GHz Wi-Fi plus Bluetooth for setup
• App: Smart Life (iOS and Android)
• Real-time power, daily and lifetime energy, multiple inverters under one account

Environmental & Mechanical

• Operating Temperature: -20 °C to +50 °C (-4 °F to 122 °F)
• Cooling: Natural convection (fanless)
• Enclosure Rating: IP65 / NEMA 3R
• Dimensions: 280 x 200 x 41.6 mm
• Weight: 1.46 kg

Usage Notes & Limitations

• Panel open-circuit voltage (Voc) must stay below 60 V, including the rise in cold weather. Leave headroom for winter.
• Do not exceed 500 W or 20 A short-circuit current per input
• DC polarity must be correct at all times
• Keep DC cables from panel to inverter under 3 m
• The inverter housing must be connected to ground
• Designed for grid-tied operation only (no off-grid or backup capability)
• Unit will automatically shut down if grid power is lost
• Rated down to -20 °C (-4 °F). In very cold climates, mount where it is sheltered.
• Wi-Fi monitoring requires a 2.4 GHz network within range of the inverter
• Install in a ventilated location, protected from direct sun and standing water

Important safety & compliance notice (U.S.)

This is a grid-connected power-conversion device. We have not verified a UL listing for this unit, and it should be treated as not certified to UL 1741 or IEEE 1547. As a result, it may not be permitted for permanent residential installation in many U.S. jurisdictions.

Use of this product may require review by a licensed electrician and approval from the local Authority Having Jurisdiction (AHJ) and utility. It is the buyer's responsibility to verify compliance with all applicable NEC, utility interconnection, and local code requirements.

This product is best suited for educational use, temporary setups, off-permit experimentation, or locations where such equipment is allowed.