Industrial Catalog
High-Efficiency Energy Monitoring & Smart Protective Hardware
Pre-certified smart power switches, precision metering modules, and circuit breakers manufactured under strict ISO 9001 and Class 100 cleanroom standards.
Technical Whitepaper
The Architecture of ESP32-Powered Smart Energy Metering
Why Tier-1 industrial buyers and grid tech disruptors build smart sub-metering infrastructure on ESP32, ESP32-C2, and ESP32-C3 platforms.
Dual-Core Computation & Edge Processing
The Espressif ESP32 architecture delivers up to 240 MHz dual-core processing capability. Dedicated to deterministic ADC sampling, fast Fourier transform (FFT) harmonic calculations, and instantaneous true RMS computation, it offloads real-time power analytics from the cloud straight to edge hardware.
- Flash Capacity: 4MB to 16MB SPI Flash options for historical on-board logging.
- Precision Metrology: Interfaced with HLW8032, BL0942, or ADE7953 dedicated energy metering ICs.
Multi-Protocol Connectivity & Mesh
ESP32 natively bridges 2.4 GHz Wi-Fi (802.11 b/g/n) with Bluetooth 5 (LE) for friction-free captive portal onboarding. For advanced sub-metering installations, ESP-Mesh and Matter-over-Wi-Fi architectures facilitate local node clustering without saturating residential Wi-Fi access points.
- Protocol Compatibility: Native MQTT/MQTTS, HTTP/REST, Modbus TCP, and WebSockets.
- Open Ecosystems: Direct plug-and-play integration into Home Assistant, ESPHome, and Tasmota.
Bank-Grade Hardware Cryptography
Commercial sub-metering requires uncompromising security against tampering and data interception. ESP32 series silicon features dedicated cryptographic hardware accelerators for AES, SHA-2, RSA, and ECC, reinforced by flash encryption and cryptographic secure boot.
- Hardware Root of Trust: eFuse keys permanently locked against extraction.
- Over-The-Air (OTA): Dual-partition rollback protection for secure remote firmware upgrades.
400,000+
Monthly Production Output (Units)
1,400 m²
Class 100 Dust-Free Cleanroom
80+
Export Territories & Global Regions
90%
Overseas Export Ratio
Supply Chain Excellence
Why International Brands Choose Shenzhen Manufacturing
Shenzhen Corunsmart Co., Ltd. (Bao'an, Shenzhen) combines localized vertical supply chains with European and North American engineering rigor.
Full-Cycle Vertical Integration
From high-speed Surface Mount Technology (SMT) with automated optical inspection (AOI) to ultrasonic plastic welding, mold fabrication, and calibrated load-bank testing, every process is conducted within our audited facilities, minimizing lead times and batch variations.
Custom Firmware Provisioning
We eliminate vendor lock-in. While conventional factories restrict clients to proprietary clouds, our engineers flash enterprise-tailored firmware in production: Tuya Smart Life, Tuya-Matter, standard Tasmota, or custom private MQTT firmware connecting to AWS IoT Core or Azure IoT.
Rapid Prototype to Mass Production
Speed to market decides revenue leadership. Our in-house firmware architects and layout engineers deliver functional engineering verification test (EVT) samples within 15–20 business days, backed by a resilient silicon sourcing pipeline with Espressif and component leaders.
Compliance & Reliability
Localization Support, Grid Compliance & Certification Assurance
A smart meter is an active electrical safety device. Sourcing from Corunsmart ensures full alignment with mandatory electrical and radio regulations worldwide.
European Union (CE, RED & RoHS)
Compliance with EN 61010-1 (Electrical Safety), EN 300 328 (RED Directive for 2.4 GHz RF), and EN 50470 Class B metrology requirements for low-voltage European distribution networks.
North America (UL, ETL & FCC)
Tested against UL 61010-1 and ANSI C12.20 standards. FCC Part 15 Subpart B & C radio approvals ensure frictionless import and compliance clearance with major US and Canadian retail channels.
UKCA & Commonwealth Standards
Full documentation and factory audits under BS EN standards. Ready for integration into UK standard modular distribution boards with bidirectional monitoring for Microgeneration/Solar PV.
Latin America & APAC Formats
Engineered to handle severe grid fluctuations: built-in over-voltage (275V+ cut-off), under-voltage, and instantaneous surge arrest (up to 6kV), perfect for Brazil (NBR 14136), Mexico, and Southeast Asia.
ISO 9001:2015 Certified Factory
BSCI Audited Workplace
CE & RoHS Compliant
FCC & ETL Certified Designs
UL Flame-Retardant V-0 PC Material
Application Horizons
Localized Scenarios & Energy Transition Megatrends
How our custom OEM meters resolve complex energy distribution and sub-metering challenges across disparate global sectors.
Multi-Tenant Sub-Metering & Prepayment
For co-living operators, commercial retail malls, and student housing. ESP32 DIN-rail meters measure kWh consumption per room with automated remote disconnection relays upon credit exhaustion, managed via local MQTT or cloud billing engines.
Solar PV & Microgeneration Net Metering
Equipped with dual-direction metering, our hardware tracks forward active power and reverse feed-in energy with millisecond granularity, allowing clean-tech platforms to monetize solar surpluses and dynamically balance battery storage.
EV Charger Sub-Distribution & Demand Response
Prevent residential main panel overloads during peak EV charging hours. The smart breaker reports branch load to home energy management systems (HEMS), triggering automated shedding or dynamic throttling based on real-time amperage.
Procurement Knowledge Base
Frequently Asked Questions for B2B Importers & Integrators
Critical specifications, firmware compatibility, MOQ guidelines, and deployment protocols explained directly by our senior engineering division.
Can we flash custom open-source firmware (Tasmota / ESPHome) in production?
Yes. Shenzhen Corunsmart supports factory-flashed open firmware including Tasmota, ESPHome, and custom FreeRTOS/ESP-IDF binaries. Pre-provisioned unique MAC addresses and customer-assigned encryption keys can be injected during the SMT testing phase.
What is the measurement accuracy of your ESP32 energy meters?
Our standard production smart energy meters achieve Class 1.0 (±1.0% error) measurement accuracy across active power (kWh), voltage (V), current (A), and power factor (PF). For utility-grade microgeneration projects, metrology IC options compliant with Class 0.5 can be engineered on an ODM basis.
How does simultaneous Live + Neutral (L+N) double-cut protect facilities?
Conventional single-pole breakers only sever the Live phase. In installations with floating neutrals, inverse polarity, or severe lightning transients, residual dangerous voltage can persist on the neutral terminal. Our L+N double-pole disconnect physically isolates both lines simultaneously for complete galvanic isolation during maintenance.
What is the typical Minimum Order Quantity (MOQ) and lead time for ODM projects?
For standard production units with custom logo laser engraving and customized branded packaging, our MOQ starts at 500 units. For full ODM hardware modifications (customized PCB shapes, specialized current transformers, or bespoke enclosures), the baseline MOQ is 2,000 units with 4–6 weeks mass production lead times.
Complete OEM Portfolio
Verified Smart Controllers, Power Meters & IoT Sub-Systems
Explore our complete export line: certified for global regional pin standards, wireless frequencies, and building management integration.
