AT-SY1-TSW WiFi Smart MCB 1P+N Energy Meter

The AT-SY1-TSW is a Tuya-compatible WiFi smart DIN rail switch with integrated energy metering, packaged in a compact MCB-style enclosure for direct installation in standard electrical distribution boards. Built by Mibo Electric (AT brand) and powered by a Tuya Wi-Fi module with BL0942 calibration-free metering IC, it brings intelligent remote switching, real-time energy monitoring, and programmable protection to any single-phase 1P+N circuit rated up to 63A.

Via the free Smart Life or Tuya Smart app (iOS and Android), you can remotely turn the circuit on or off from anywhere, monitor real-time voltage, current, active power, and cumulative energy consumption (kWh) logged by day, month, and year. Four scheduling modes — Schedule, Countdown, Cycle, and Astronomical (sunrise/sunset) — allow full automation of connected loads without any additional smart home hub. Voice control is supported via Amazon Alexa and Google Assistant for hands-free operation.

Onboard protection features include adjustable overcurrent, overvoltage, undervoltage, and overtemperature thresholds configurable through the app, with the switch tripping automatically when limits are exceeded and sending a push notification to your phone. An onboard MOV provides basic surge protection. Please note that the AT-SY1-TSW is a smart relay switch with software-configurable protection — it is not a rated short-circuit interrupting device and should always be installed alongside a conventional MCB in the distribution board for full circuit protection.

Specification:

• Model : AT-SY1-TSW
• Brand : AT (Mibo Electric Group)
• Metering IC : Shanghai Belling BL0942
• WiFi Module : Tuya T1-U-HL / BK7238
• Configuration : 1P+N (Live + Neutral switching)
• Rated Current : 63A (max)
• Working Voltage : AC 90V – 300V, 50/60Hz
• WiFi Standard : 2.4GHz IEEE 802.11 b/g/n
• App : Smart Life / Tuya Smart (iOS & Android)
• Voice Control : Amazon Alexa, Google Assistant
• Metering Parameters : Voltage (V), Current (A), Active Power (W), Energy (kWh)
• Energy Logging : Hourly / Daily / Monthly / Yearly
• Scheduling Modes : Schedule, Countdown, Cycle, Astronomical (sunrise/sunset)
• Protection Functions : Overcurrent, overvoltage, undervoltage, overtemperature (all app-configurable)
• Surge Protection : MOV onboard
• Standby Power : ~0.32W (typical)
• Mechanical Life : > 100,000 operations
• Operating Temperature : -25°C to +70°C
• Mounting : 35mm DIN rail (standard)
• Wiring : Live (L) + Neutral (N) — power must enter from top terminals
• Note : This is a smart relay switch, not a short-circuit rated MCB — install alongside a conventional circuit breaker