📊 SONOFF POW Elite 20A — Smart Power Meter Switch with LCD (POWR320D, WiFi, DIN Rail)
The most powerful inline POW switch in the range. The SONOFF POW Elite 20A (POWR320D) is a WiFi smart switch with built-in power monitoring that handles loads up to 20A / 4,400W at 220V. Features a built-in LCD display for real-time power, current, voltage, and cumulative energy readings. Track 6 months of hourly usage history, export to Excel, set overload protection thresholds, and control via eWeLink, Alexa, or Google Home. DIN rail mountable. ESP32 chip. NRCS & ICASA certified. MPN: POWR320D.
Browse the full SONOFF POW power monitoring range:
⚡ Key Features
- 20A / 4,400W Maximum Load — handles high-power circuits: electric heaters, geyser elements (with timer), underfloor heating, large lighting circuits, workshop equipment
- Built-In LCD Display — real-time on-device readings: power (W), current (A), voltage (V), cumulative energy (kWh); no phone needed for quick checks
- 6-Month Power Usage History — hourly-resolution data in the eWeLink app; export to Excel (.xlsx) for energy audits, tenant billing, or cost tracking
- Overload Protection — set custom thresholds for power, voltage, and current; the relay automatically trips if any limit is exceeded, protecting your appliances
- Daily/Monthly Consumption Goals — set energy budgets; receive push notification when you reach your target; helps prevent bill shock
- ESP32 Chip — 200% faster than the older ESP8266 (POWR3); more responsive, better WiFi stability, future-proof firmware updates
- DIN Rail Mountable — professional installation in your DB board alongside circuit breakers; standard 35mm DIN rail clip
- Alexa Energy Dashboard — view energy consumption across all POW devices in one centralised Amazon Alexa dashboard
- Home Assistant — supported via eWeLink add-on, SonoffLAN (HACS), or Tasmota (ESP32 flash); exposes power, voltage, current, energy, switch entities
- Tasmota / ESPHome Compatible — ESP32-based; can be flashed via serial for full local control without cloud dependency
🏠 Perfect For
High-Power Appliance Control
Switch and monitor appliances drawing up to 20A: oil heaters, underfloor heating, workshop tools. See exactly how much each appliance costs to run.
Circuit-Level Energy Metering
Install one per circuit in your DB board. Monitor lighting, plugs, geyser, and stove circuits independently. Identify which circuits cost the most.
Tenant Sub-Metering
Install per flat or office unit. Export 6 months of hourly data to Excel for accurate tenant billing. Cheaper and simpler than traditional sub-meters.
Load Shedding Recovery
Set power-on state (On/Off/Last) to control what happens when power returns after load shedding. Prevent all appliances surging on simultaneously.
📋 Technical Specifications
| Product | SONOFF POW Elite Smart Power Meter Switch |
| MPN / Model | POWR320D |
| Max Load | 20A / 4,400W @ 220V AC |
| Input Voltage | AC 100–240V, 50/60Hz |
| Display | LCD — Power (W), Current (A), Voltage (V), Energy (kWh) |
| Relay | Built-in — inline switching |
| Wiring | Neutral wire required (L-in, L-out, N) |
| Usage History | 6 months · Hourly resolution · Excel export |
| Overload Protection | Yes — custom power, voltage, current thresholds |
| Chip | ESP32 |
| WiFi | 2.4 GHz 802.11 b/g/n |
| Mounting | DIN rail (standard 35 mm) |
| Enclosure | Flame-retardant V-0 |
| Certifications | NRCS · ICASA · CE · FCC |
| Home Assistant | eWeLink add-on · SonoffLAN · Tasmota · ESPHome |
| Voice Control | Amazon Alexa (+ Energy Dashboard) · Google Assistant |
| App | eWeLink (iOS & Android) |
| Warranty | 1 Year Manufacturer Warranty |
❓ Frequently Asked Questions
What's the difference between POWR320D (20A) and POWR316D (16A)?
Can I use this for my geyser?
Does it need a neutral wire?
Is it NRCS and ICASA certified?
Can I flash Tasmota on it?
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20A inline power metering with LCD. NRCS & ICASA certified.