shelly plus 1pm temperature sensor

• time：2025-08-22 03:47:57
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Shelly Plus 1PM Temperature Sensor Review: The Ultimate Smart Home Power & Climate Monitor

Ever stared at a confusingly high energy bill, wondering where all that power went? Or perhaps you’ve struggled to keep your home consistently comfortable, suspecting your thermostat isn’t telling the whole story? The challenge of managing energy consumption and optimizing indoor climate is a common pain point for homeowners. While traditional solutions often involve separate devices – one to track electricity and another for temperature – the Shelly Plus 1PM Temperature Sensor emerges as a remarkably elegant and powerful two-in-one solution. This compact smart relay device not only monitors the power consumption of a connected appliance or circuit with impressive precision but also integrates a high-accuracy temperature sensor, delivering crucial environmental data right where the energy is being used.

Understanding the Shelly Plus 1PM: Beyond Basic Monitoring

At its core, the Shelly Plus 1PM is a Wi-Fi enabled relay switch designed for installation within electrical junction boxes (like behind switches or sockets) or appliance connection points. Its primary function is to allow remote control (on/off) and detailed energy monitoring of whatever device or circuit it’s connected to. This includes real-time power (W), cumulative energy consumption (kWh), voltage, and current. Knowing exactly how much energy your washing machine, space heater, or even an entire lighting circuit consumes is invaluable for identifying energy hogs and managing costs.

The game-changing addition is the integrated high-precision temperature sensor. Unlike standalone smart plugs with basic power monitoring or separate room thermometers, the Plus 1PM places accurate temperature data directly at the point of energy use. This unique combination unlocks a deeper level of insight and automation potential that single-function devices simply cannot offer.

Key Features and Technical Capabilities

• Dual Function Powerhouse: Measures Real-time Power (W), Energy Consumption (kWh), Voltage (V), Current (A) AND Ambient Temperature (ºC/ºF), all within one compact unit.
• High-Accuracy Sensing: The temperature sensor boasts excellent precision (±0.2°C typical), providing reliable data for critical applications.
• Robust Connectivity: Connects seamlessly to your 2.4GHz Wi-Fi network (no hub required) and integrates effortlessly with major platforms like Shelly Smart Control (App & Cloud), Home Assistant, OpenHAB, Apple HomeKit (via firmware update or HomeBridge/Home Assistant), Google Home, and Amazon Alexa.
• Local Control & Automation: Supports Scripting for complex automations that run locally on the device itself, ensuring operations continue even if the internet drops. Works seamlessly with webHooks and MQTT.
• Over-the-Air (OTA) Updates: Receives regular firmware updates from Shelly, adding new features and improving security and stability over time.
• Compact & DIN Rail Compatible: Designed to fit within standard electrical boxes and also includes mounting clips for easy installation on DIN rails in consumer units or cabinets.

Why the Integrated Temperature Sensor is Revolutionary

The true brilliance of the Shelly Plus 1PM Temperature Sensor lies in the synergistic relationship between its power monitoring and temperature sensing capabilities. Here’s how this integration provides unique advantages:

1. Appliance-Specific Climate Insight: Monitor not just if your fridge or freezer is running, but how hard it’s working relative to its internal temperature. Detect potential cooling inefficiencies before food spoilage occurs. Track the outlet temperature of a space heater alongside its power draw to assess effectiveness.
2. Preventing Overheating Risks: Critical for devices prone to generating heat (e.g., amplifiers, servers, AV equipment, power tools charging). Set up automations to automatically shut off power via the relay if the temperature around the appliance exceeds a safe threshold. This proactive safety feature adds a vital layer of protection.
3. Optimizing Climate Control: While not a direct replacement for a central thermostat, strategically placed Plus 1PM units can provide valuable localized temperature data. Use this data to fine-tune heating/cooling systems in specific zones or rooms, or to control fans based on both temperature and occupancy (if integrated with other sensors).
4. Energy Consumption Context: Understand why energy consumption spikes. Did that space heater use more power because it was running longer, or because it was struggling against a significant temperature drop near the window? Correlating power and temperature data provides deeper diagnostics.

Practical Applications & Use Cases

• Refrigerator/Freezer Monitoring: Track energy usage and internal/external ambient temperature. Get alerts for unusual temperature rises (potential failure) or excessive run times indicating door left ajar or cooling issues.
• Space Heater/Air Conditioner Control: Monitor energy cost in real-time. Automate shutdown if the room reaches the desired temp or if unsafe surface temperatures are detected near the unit. Prevent energy waste from units left on accidentally.
• Home Office/Server Closet: Monitor temperature critical equipment. Automatically trigger cooling fans or send alerts if temperatures climb too high during extended use or a system malfunction.
• Garage/Workshop: Monitor power tools, battery chargers, and environmental conditions. Automate ventilation fans based on temperature increases from equipment use.
• General Power Monitoring with Environmental Context: Gain detailed insights into the energy consumption of almost any 120V/230V AC appliance (within its 16A max rating) while simultaneously understanding the thermal environment impacting its operation.

Installation and Setup: Approach with Care

Installation involves working with mains electricity. Unless you are a qualified electrician, hire a professional. The device connects in-line with the live wire of the appliance/circuit you want to monitor/control. The Shelly Smart Control app offers a remarkably straightforward setup wizard once power is applied, guiding you through Wi-Fi connection and initial configuration. Creating automations combining power and temperature conditions is intuitive within the app’s rule editor.

The Verdict: A Smart Investment for Insight and Control

The Shelly Plus 1PM Temperature Sensor stands out in the crowded smart home market not by being the most complex device, but by offering uniquely valuable, actionable data through its integrated power and temperature monitoring. It solves a genuine problem – the lack of context between energy use and environmental conditions at the device level. For homeowners, DIY enthusiasts, and even professionals seeking to optimize systems or prevent failures, this device delivers exceptional value and capability. Its built-in temperature sensor transforms it from a simple smart switch into a sophisticated diagnostic and safety tool, empowering users with the insights needed to save energy, enhance comfort, and protect their appliances. If you’re serious about understanding and controlling your home’s energy and climate dynamics, the Shelly Plus 1PM is an essential component to consider.