This Guideway 3P4W WiFi Photovoltaic Smart Meter is a three‑phase reclosing protector and energy monitor in one. It supports Tuya WiFi intelligent control, features 10 alarm protection mechanisms, and offers real‑time data sampling via mobile APP.Choose this rail meter for: Tuya WiFi control, various protections with stable performance, APP real‑time data collection, and compact size for easy DIN‑rail installation.Ideal for photovoltaic (solar) systems, distribution cabinets, industrial equipment, and commercial power monitoring – all from your phone.No need to check on site – just open your phone and connect wirelessly.

Detailed Description with Image Labeling

Brand CHULIYI, model 3P4W WiFi Photovoltaic smart meter. Large LCD screen shows:

• 0.05 kWh (energy consumption)

• 0°C (temperature)

• 223.4 V (voltage per phase)

• 0.0 V / -4.0 V (phase differential)

• 0.0 A / 0.000 mA (current & leakage)
  Displays L1, L2, L3 phase status, WiFi connection, REV (reverse power) indicator. Features Tuya, CE, FC certifications.

1. Tuya WiFi intelligent control – remote monitoring and operation

2. Various protections, stable performance – multiple alarm mechanisms

3. Mobile APP real‑time data collection – view anytime, anywhere

4. Compact size, easy to install – fits standard DIN‑rail distribution boxes

5. Shows complete three‑phase connection:

• Line A in / B‑wire in / C‑wire in (input side)

• A‑phase out / B‑phase out / C‑phase out (output side)

• Zero in / Zero out (neutral)
  Labeled terminals: L1, L2, L3, WiFi, REV – clear for electricians.

Large screen, large font – measurement results at a glance. Displays:

• 0.06 kWh (energy)

• 223.4 V / 0.0 V (voltage per phase)

• 0.0 A / 000 mA (current & leakage)

• °C temperature reading

• REV reverse power indicator

No need to check on site, just turn on your phone and connect wirelessly – view data quickly and conveniently. App interface shows real‑time data for:

• L1: 0.05, L2: 0.00, L3: 0.00 (phase readings)

• W1, W2, W3 (power per phase)

• REV: 0.00 (reverse power detection)

Thickened ABS flame retardant shell avoids fire hazards caused by overloading. Product display shows robust housing with CE mark and clear terminal labeling (L1, L2, L3, REV).

Various screen readings showing: 0.06 kWh, 223.4 V, 0°C, 0.0 A, 000 mA, REV – demonstrating clear visibility under different measurement states.

Key Advantages

• 10‑in‑1 protection – Overvoltage, undervoltage, overcurrent, leakage, reverse power, temperature, and more – comprehensive circuit safety

• Tuya WiFi smart control – Remote monitoring and operation via mobile APP – no site visits needed

• Three‑phase real‑time monitoring – L1/L2/L3 voltage, current, energy, leakage, and reverse power – all on one screen

• Large LCD display – Big font, clear readings – easy to read at a glance

• Flame‑retardant ABS shell – Thickened housing prevents fire hazards from overloading

• Photovoltaic ready – Ideal for solar systems with reverse power detection (REV)

• Easy installation – Compact DIN‑rail design, standard three‑phase wiring

• Wireless convenience – View data quickly from your phone, no on‑site inspection

Application Areas

• Photovoltaic (solar) power systems – Monitor generation, detect reverse power

• Distribution cabinets – Central circuit protection and energy metering

• Industrial equipment – Three‑phase motor and machinery power monitoring

• Commercial buildings – Real‑time consumption tracking for energy management

• Household three‑phase supply – Large homes or workshops with three‑phase power

• Rental properties / factories – Remote disconnection and consumption billing

FAQ (5 questions)

1. What is the "10 alarm protection mechanisms"?
It includes: overvoltage, undervoltage, overcurrent, earth leakage, reverse power, temperature overload, phase loss, phase imbalance, surge, and short‑circuit protection – automatic trip and reclosing.

2. Does it work with the Tuya/Smart Life app?
Yes. Connect via WiFi 2.4GHz to the Tuya or Smart Life app for real‑time data, remote ON/OFF, and alarm notifications.

3. What does the "REV" indicator mean?
REV stands for reverse power – it detects when power flows backward (e.g., solar export to grid). Useful for net‑metering and photovoltaic systems.

4. Can I install this myself?
Installation requires basic electrical knowledge for three‑phase wiring. We recommend a qualified electrician. The compact DIN‑rail design fits standard distribution boxes.

5. What is the difference between this and a standard circuit breaker?
This device combines breaker, recloser, energy meter, leakage protector, voltmeter, ammeter, and power monitor – all in one, with WiFi remote control and data logging.