MEROSS MSS315MA - Matter Smart Plug with Energy Monitor

General Presentation

The MEROSS MSS315MA Matter Smart Plug is a next-generation WiFi smart plug that incorporates the Matter protocol for universal compatibility with major smart home ecosystems. This smart plug transforms your ordinary electrical devices into connected equipment that you can control remotely via smartphone, voice commands, or automations, while monitoring their energy consumption in real time.

Unlike traditional smart plugs requiring proprietary apps and cloud accounts, the MSS315MA leverages the Matter protocol to offer a fully local architecture. Matter devices communicate directly with each other on your local network without relying on a cloud, ensuring complete privacy (no registration, no data tracking) and stable operation even in the event of an Internet outage. Each message is protected by proven standard cryptographic algorithms, ensuring robust end-to-end security.

The integrated energy monitoring function is a major asset of the MSS315MA. Thanks to an internal electricity meter, the Meross app provides real-time reports on the energy consumption of your connected devices as well as detailed historical data. This feature allows you to accurately track your electricity consumption, identify energy-hungry devices, and reduce your bills by adopting a more eco-friendly and energy-efficient lifestyle. The MSS315MA integrates perfectly with the Meross app, Apple HomeKit, Amazon Alexa, Google Assistant, and Samsung SmartThings, offering total flexibility in choosing your smart home ecosystem.

Key Features

• Matter Protocol for Universal Compatibility: The MSS315MA is built with the Matter protocol, an open standard supported by Apple, Google, Amazon, Samsung, and over 500 global companies. This architecture ensures seamless integration with all major home automation platforms (Apple HomeKit, Amazon Alexa, Google Assistant, SmartThings, Home Assistant) and guarantees full interoperability between manufacturers and ecosystems. Matter allows the plug to be controlled from any compatible app, enabling the device via Alexa and turning it off via Apple Home without friction.
• Real-Time Energy Monitoring: The integrated electric meter continuously measures the energy consumption of connected devices. The Meross app displays the instantaneous power consumed, the consumption history over various periods, and even allows calculation of the impact on your electricity bill. This feature is particularly useful for identifying energy-hungry devices, tracking the production of balcony solar panels, or detecting abnormal consumptions indicating a malfunction.
• Ultra-Simplified Setup: Adopting the Matter standard ensures a quick and frictionless installation. Simply scan the QR code on the plug's sticker with your smartphone for the device to be automatically detected and configured. The Matter Simple Setup (MSS) with compatible Amazon Echo devices allows even a one-step setup: just plug in the device and ask Alexa to discover new devices for automatic connection.
• Enhanced Security and Privacy: Matter offers a fully local architecture where devices communicate directly on your home network without transiting through cloud servers. This approach ensures complete privacy (no registration, no data tracking, no information collection) and robust security with standard cryptographic algorithms protecting each message. Your energy consumption data remains private and is never shared with third parties.
• Multi-Platform Voice Control: The MSS315MA is compatible with Apple HomeKit, Siri, Amazon Alexa, and Google Assistant. Control your devices hands-free with simple voice commands to turn connected equipment on or off. For remote HomeKit control, a HomeKit hub is required (HomePod, Apple TV 4K, Apple TV HD, or iPad configured as a HomeKit bridge).
• Stable and Fast Local Control: Matter devices communicate locally on the network without relying on the cloud, ensuring ultra-fast response times and stable operation even in the event of an Internet outage. This local architecture ensures that your automations and controls continue to function normally even if your Internet connection is interrupted.
• Smart Schedules and Automations: Create schedules to automatically turn connected devices on and off at specific times. The plug supports sunrise/sunset schedules, allowing you to save energy by automatically turning off lights when they are not needed or when you forget them on. The "Away" mode simulates presence by randomly activating devices to enhance your home's security.
• Multi-Device Management and Scenes: The Meross app allows you to group multiple MSS315MA plugs for unified control. Create scenes combining multiple Meross devices for complex automations activated by a single command.
• Multifunction Physical Button: The button on the front serves both as a manual switch and an LED indicator. The LED lights up green when the plug is activated and blinks orange during pairing mode. A long press of 5 seconds on the button performs a factory reset.
• Overload Protection: Built-in safety features protect against electrical overloads and short circuits. V0 fireproof materials provide additional protection against fire hazards, ensuring your home's safety.
• Compact and Discreet Design: The compact design of the MSS315MA integrates harmoniously into any decor. Unlike some bulky smart plugs, the MSS315MA does not block adjacent sockets on a power strip or double wall outlet, allowing the use of all available sockets.
• Automatic Standby Shutoff: The automatic shutoff function detects when a device is on standby and cuts it off automatically, minimizing risks related to electrical aging, energy waste, and overheating.

Detailed Technical Specifications

Power and Capacity

• Model: MSS315MA (EU version)
• Input Voltage: 100-240V~ AC, 50/60Hz
• Maximum Current: 16A
• Maximum Power: 3840W (EU/FR)
• Plug Type: EU/Schuko Type F
• ⚠️ Switzerland Compatibility: NOT directly compatible - EU to Switzerland Type J adapter required
• Operating Temperature: 0°C to 40°C

Connectivity

• Main Protocol: Matter
• WiFi: IEEE 802.11b/g/n, 2.4GHz only
• Bluetooth: 4.2 or later (for initial setup)
• Wireless Module: Realtek RTL8720CM
• Architecture: Local (direct communication without cloud)

Energy Monitoring

• Integrated Meter: Yes
• Real-Time Power: Instant display in the app
• Historical Data: Consumption over customizable periods
• Bill Calculator: Electricity cost estimation in the app
• Notifications: Alerts on abnormal consumptions
• Note: Monitoring via Meross app or Home Assistant (not currently supported by Matter)

Platform Compatibility

• Native App: Meross app (iOS/Android)
• Apple HomeKit: Yes (HomeKit hub required for remote control: HomePod, Apple TV 4K/HD, or iPad)
• Amazon Alexa: Yes (Matter Simple Setup compatible with Echo)
• Google Assistant: Yes
• Samsung SmartThings: Yes
• Home Assistant: Yes (via Matter integration or custom Meross LAN component via HACS)
• Voice Control: Via Siri, Alexa, Google Assistant

Smart Features

• Local Control: Stable and fast without cloud dependency
• Offline Operation: Automations maintained even without Internet
• Scheduled Timings: Automatic activation/deactivation
• Sunrise/Sunset: Schedules based on geographic location
• Away Mode: Presence simulation for security
• Scenes and Groups: Unified control of multiple devices
• Local Routines: Automations executed locally
• Auto Standby Shutoff: Detection and automatic cut-off of devices in standby
• Millisecond Control: Ultra-fast response time

Physical Characteristics

• Type: Pass-through plug
• Button/LED: Multifunction button with integrated LED
• Green LED: Plug activated (ON)
• Blinking Orange LED: Pairing mode
• Reset: Long press 5 seconds on button
• Design: Compact, does not block adjacent sockets
• Materials: Fireproof V0 (fire protection)
• Ground Contacts: Connected (not just cosmetic)
• Relay: HF32FV-16 16A (Hongfa Technology)
• Matter Sticker: QR code and number for pairing on the side of the plug

Security and Certifications

• Overload Protection: Integrated
• Short Circuit Protection: Yes
• Matter Security: Proven standard cryptography
• Privacy: 100% local, no cloud, no tracking
• Certifications: CE, RoHS, WEEE
• FCC Compliance: Part 15

System Configuration

• iOS: Version 16.1 or later
• Android: Version 8.1 or later
• Bluetooth: 4.2 or later required
• WiFi Network: Existing 2.4GHz required
• Configuration: QR code scan or manual Matter number entry
• Matter Simple Setup: Compatible with Amazon Echo (same Amazon account required)
• HomeKit Hub Required: HomePod, Apple TV 4K/HD, or iPad for remote Apple control