EU Smart Power Monitor (No Relay Version)
 
Tasmota Firmware  Energy Monitoring Only ESP8285 + HLW8032
 
This smart plug is engineered for always-on devices such as NAS, servers, routers, gateways, smart hubs, and network equipment.
To guarantee uninterrupted operation, it includes NO relay, ensuring zero chance of accidental shutdown or disconnection.
Powered by ESP8285 Wi-Fi and the HLW8032 energy metering chip, it delivers real-time monitoring of voltage, current, power, and energy usage.
The device comes pre-flashed with Tasmota, ready for MQTT-based automation and Home Assistant integration.
 
Built for Always-On Devices
Ideal for:
NAS / Home Server
Router / Network Switch
Smart Home Gateway / Hub
Mini PC / Thin Client
Raspberry Pi / Edge AI Device
UPS & Power Monitoring Systems
No relay = no risk of turning off your device accidentally.
Designed for 24/7 continuous monitoring and power analytics.
 
Key Features
No Relay - 100% uninterrupted power
HLW8032 energy monitoring (high accuracy)
ESP8285 Wi-Fi MCU
EU Plug (Type C / Type F)
Tasmota pre-flashed - MQTT & REST API ready
Real-time power consumption tracking
Supports MQTT, HTTP, Web UI, OTA
Fully local - no cloud dependency
Ideal for automation, power logging, and data collection
 
Technical Specifications
Parameter
Description
MCU
ESP8285 (2MB Flash)
Energy Meter
HLW8032
Relay
None - for guaranteed uptime
Firmware
Pre-flashed Tasmota
Voltage
100~240V AC
Plug Type
EU Type C / F
Protocols
MQTT / HTTP / Web UI
OTA Updates
Supported
Current
16A
 
The measurement error of active power about 0.2%
The measurement error of effective current is 0.5%
The measurement error of effective voltage is 0.5%
 
Automation Use Cases
Detect if a server or router is offline
Monitor energy efficiency over time
Alert if a NAS stops drawing power
Log consumption for IT equipment
Trigger smart automations based on power usage
Ideal for lab testing & data collection
 
Why Choose This Version
Designed for critical devices that must stay powered
Silent & safe - no relay, no downtime risk
Tasmota firmware for full local control & MQTT
Excellent for IT rooms, smart labs, and automation systems
Works 24/7 without interruption
 
Template:
 
{"NAME":"Athom Plug V2","GPIO":[0,0,0,3104,0,32,0,0,0,576,0,0,0,0],"FLAG":0,"BASE":18}
 
GPIOs:
 
GPIO3: CSE7766 Rx
GPIO5: Button1
GPIO13 :LedLinki
 
Notice:
HLW8032  occasionally report invalid power measurements for load values below 5W. During this situation it sometimes reports a valid load. By setting SetOption39 to 128 (default) it must read at least 128 invalid power readings before reporting there is no load.
To discard all loads below 6W simply set SetOption39 1 (0 will reset to default on next restart) so it will report no load below 6W.
 
Product Highlights
No Relay Power Monitoring EU Plug Made For Tasmota is a Tasmota smart plug for local appliance control, scheduling, power monitoring where supported, and Home Assistant automation.
Ideal For
Appliance control
Power monitoring where supported
Schedules and Home Assistant automations
Compatibility
Designed for local smart home use with Tasmota, MQTT, and Home Assistant workflows. This product is suitable for users who prefer local control and privacy-friendly automation.