Overview

Browse by topic below, or use the search bar to find your question directly.

Selection & Specs

Help users understand hardware capabilities and version differences before purchasing or upon first receiving the product.

Category	Question
Quick Answer	What communication protocols do your devices support? [All Products]
Quick Answer	What is the maximum wire diameter for the SPM01 and SPM02? [SPM01/SPM02 Products]
Quick Answer	Can I use third-party CTs with the SDM series? [SDM Products]
Quick Answer	What Apps and Gateways/Hubs do your products support? [All Products
Quick Answer	Which circuit breakers are compatible with the SPM01/02 energy sensors? [SPM Products]
Quick Answer	Can the SPM/SDM monitor direct current (DC)? [SPM/SDM Products]
Quick Answer	Can the SPM meters be flashed with custom firmware? [SPM Products]

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Use Cases / Applications

Help users determine whether the products are suitable for a specific application scenario, and understand how to configure them for that use case.

Category	Question
Quick Answer	Do SPM and SDM energy sensors work with split-phase systems in USA and Canada (120V/240V)? [SPM/SDM Products]
Quick Answer	Does the SPM02 FLEX support measurement of three single-phase circuits? [SPM02]
Quick Answer	Does SDM01 support solar export limiting (Zero Export) ? [SDM01]

Installation & Wiring

Answer "can I?" and "how do I wire it?" questions during physical installation (not error troubleshooting).

Connectivity & Integration

Answer questions about App, gateway, and third-party platform integration.

Category	Question
Quick Answer	Can SPM and SDM energy sensors be connected to Home Assistant? [SPM/SDM Products]
Quick Answer	What happens to my energy data if the network connection of SPM/SDM is lost? [SPM/SDM Products]
Quick Answer	How do I set up Wi-Fi for the Open Wi-Fi versions? [All Products]
Quick Answer	Can I flash Standard Zigbee firmware onto a Tuya Zigbee device?

Data & Measurement

Explain where the data displayed in the App comes from, how often it refreshes, and where it is stored.

Category	Question
Quick Answer	What accuracy standard do your meters follow? [SPM/SDM Products]
Quick Answer	Why does the SPM/SDM show lower (or different) energy consumption compared to another meter?
Quick Answer	How to download the historical data measured by SPM/SDM Meters (Tuya Version)?
Quick Answer	Tuya "Davidia" vs. "Basic" Version: What's the difference?
Quick Answer	Does SPM/SDM support bi-directional energy measurement? [SPM/SDM Products]
Detailed Guide	How to Reset Tuya Smart Switches and Smart Meters

Electrical Concepts

Clarify common physical phenomena that are easily misunderstood, presenting them as educational knowledge points.

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• 🔧 Experiencing a device issue? → Go to Troubleshooting