How do I choose the right model?

By system voltage, site scenario and communication: lightning protection by discharge capacity and SPD monitoring needs; electrical safety by leakage/temperature/arc monitoring; digital energy by breaker and efficiency modules; edge-cloud by gateway points and uplink.

Which protocols are supported?

Devices generally support RS485/Modbus RTU; gateways support Modbus TCP and MQTT uplink, integrating with SCADA, energy management and cloud platforms.

Can you provide selection and technical support?

Yes. Contact a YESLON technical advisor with your scenario and we will provide matching models and a scheme recommendation.

PRODUCTS

Products 56+ Smart Hardware

Spanning nine product lines: virtual power plant, electrical safety, smart lightning protection, smart fire protection, digital energy, carbon efficiency, industrial control, industrial platform and industrial AI. Every product comes with technical parameters, selection guidance and onboarding plans.

Product CategoriesAll Products56Virtual Power Plant / Microgrid3Electrical Safety12Smart Lightning Protection16Smart Fire Protection4Digital Energy / Energy Supervision5Carbon Efficiency / Carbon Assets / Carbon-Neutral Parks3Industrial Control6Industrial IoT / IIoT Platform3Industrial AI Analysis System4Need help with selection?Submit your application scenario and a technical advisor will provide matching models and quotations within 24 hours.Consult a Technical AdvisorCoreFECB2P Smart Circuit BreakerFECB2PThree-layer protection against overload/short-circuit/leakage, with remote switching control and energy metering, the core actuator terminal for VPP load aggregation and demand response.Overload protectionShort-circuit protectionLeakage protectionRemote switchingView Details →Virtual Power PlantCompareFECM2 Smart Circuit Breaker GatewayFECM2Multi-loop circuit-breaker data convergence, 4G/Wi-Fi cloud communication, realising unified access and management of distributed load terminals.Multi-loop convergence4G/Wi-FiCloud communicationUnified managementView Details →Virtual Power PlantCompareRecommendedCW Edge Computing GatewayCW Series100+ industrial-protocol acquisition, 4G/Wi-Fi/Ethernet cloud channels, edge computing and rule engine, supporting source-grid-load-storage coordinated scheduling.100+ Protocols4G/Wi-Fi/EthernetEdge ComputingRule EngineView Details →Virtual Power PlantCompareRecommendedESA Full-Factor Smart MeterESA-1001-R / 1002-R / 1003-RSynchronous capture of voltage, current, power, power factor and 2nd-31st harmonics, 256 samples/cycle, 0.2-class accuracy.VoltageCurrentPowerHarmonicsView Details →Electrical SafetyCompareESB Three-Phase Unbalance DetectorESB SeriesReal-time monitoring of three-phase unbalance and zero-sequence current, warning grid-unbalance risks and reducing line losses and equipment wear.Three-phase unbalanceZero-sequence currentWarningLine-loss analysisView Details →Electrical SafetyCompareRecommendedESF Electrical-Fire DetectorESF SeriesAdjustable leakage-current monitoring 10-3000mA and temperature detection -30~125°C, compliant with GB 14287, early warning for electrical-fire hazards.10-3000mA leakage-30~125°C temperatureGB14287Early warningView Details →Electrical SafetyCompareEST Temperature DetectorEST Series1-16-channel temperature monitoring, supporting NTC/PT100/thermocouple sensors, real-time sensing of distribution-node temperature.1-16 channelsNTCPT100ThermocoupleView Details →Electrical SafetyCompareESP Zero-Fault Voltage DetectorESP SeriesMonitors N-PE zero-fault voltage, ensuring power safety for precision equipment and IT systems, preventing equipment faults from grounding anomalies.N-PE voltageZero-fault monitoringGrounding anomalyEquipment protectionView Details →Electrical SafetyCompareAIFA Arc-Fault MonitorFA / FAP SeriesCompliant with UL 1699B, early identification of arc faults, combining with the AI analysis system for hidden-risk identification and confidence scoring.UL 1699BArc identificationAI warningConfidence scoringView Details →Electrical SafetyCompareFECB2P Smart Circuit BreakerFECB2POverload/short-circuit/residual-current protection, remote switching and energy metering, adjustable leakage 30/100/300mA, integrated distribution safety and control.Overload protectionShort-circuit protectionLeakage protectionRemote switchingView Details →Electrical SafetyCompareESC Leakage-Current DetectorESC SeriesUp to 3 independent channels of residual-current measurement (10-3000mA, 0.5-class accuracy), correction algorithm + high-speed sampling, 2 DI + 1 relay linkage.3-channel residual current10-3000mA0.5-classLinkage controlView Details →Electrical SafetyCompareESI Digital Status DetectorESI Series8-channel dry-contact switch inputs, precise status monitoring, correction algorithm + high-speed sampling, 1 relay output with linkage control.8 DIsDry contactStatus monitoringLinkage controlView Details →Electrical SafetyCompareRecommendedESX Smart Edge Computing GatewayESX SeriesBuilt-in edge-computing engine, 30 devices/2000-point data access, 4G/Wi-Fi/Ethernet cloud, offline data continuation.Edge computing30 devices/2000 points4G/Wi-Fi/EthernetOffline continuationView Details →Electrical SafetyCompareSFA Full-Factor Electrical Smart MeterSFA SeriesIntegrated collection, control, communication and management, full electrical parameters + 4-channel temperature + residual current + 2 relays, 0.2S-level energy accuracy.Full electrical parameters0.5-class/0.2S accuracy4-channel temperature + leakage2 relays linkageView Details →Electrical SafetyCompareRecommendedFS Lightning-Protection MonitorFS-33211SPD online monitoring, microamp-accuracy leakage-current detection, supporting four/five-element and nine-element monitoring, full visibility of SPD status and life trend.SPD online monitoringuA-level leakageFour/Five-element / Nine-elementLife trendView Details →Smart Lightning ProtectionCompareFSS Smart Surge Protective DeviceFSS SeriesIntegrated smart SPD with built-in monitoring and communication, LCD/OLED display, combined lightning protection and status monitoring.Integrated smart SPDLCD/OLEDBuilt-in communicationStatus monitoringView Details →Smart Lightning ProtectionCompareFL Lightning-Current MonitorFL SeriesPeak lightning current 1kA-120kA measurement, GPS/BeiDou timing, IP67 outdoor protection, precise lightning-event attribution.1kA-120kA peakGPS/BeiDouIP67Event attributionView Details →Smart Lightning ProtectionCompareFR Ground-Resistance DetectorFR SeriesThree-point / precision three-wire ground-resistance online monitoring, 0.01-2000 Ohm range, real-time sensing of grounding-system status, ensuring effective lightning protection.Three-point / precision three-wire0.01-2000 OhmOnline monitoringGrounding statusView Details →Smart Lightning ProtectionCompareExplosion-proofFRP Ground-Resistance Monitor (Loop Method)FRP SeriesLoop-method ground-resistance monitoring, 0.01-2000 Ohm wide range, Ex d IIB T4 Gb explosion-proof certification, suitable for petrochemical hazardous areas.0.01-2000 OhmLoop methodEx d IIB T4 GbPetrochemicalView Details →Smart Lightning ProtectionCompareFG Smart Lightning GatewayESX SeriesUp to 128 lightning-monitoring points aggregated, unified cloud management, the data hub of an online lightning-protection platform.128 monitoring pointsData convergenceUnified cloudLightning platformView Details →Smart Lightning ProtectionCompareCoreESM Lightning-Protection DetectorESM SeriesSelf-developed 10uA leakage-current sensor, monitoring leakage/temperature/voltage/lightning-count/grounding, with proprietary life-prediction algorithm.10uA leakage sensorLightning countLife predictionFull-factor monitoringView Details →Smart Lightning ProtectionCompareFSP Surge-Protection BaseFSP SeriesPlug-in smart surge base; standard SPDs insert directly to become smart, with lightning counting, temperature monitoring and remote-signaling alarm.Plug-inLightning countTemperature monitoringRemote signalingView Details →Smart Lightning ProtectionCompareFD Leakage-Current MonitorFD SeriesHigh-accuracy AC/DC residual-current monitoring, graduated over-limit alarm + event logging, for leakage protection and fire-hazard monitoring.AC/DC compatibleHigh-accuracy samplingGraded alarmEvent loggingView Details →Smart Lightning ProtectionCompareCoreESM Full-Factor SPD TerminalESM SeriesSelf-developed 10uA leakage-current sensor, monitoring leakage/temperature/voltage/lightning-count/grounding/remote-signaling, with proprietary life prediction and health records.10uA leakage sensorFull-factor monitoringLife prediction0-100.0% healthView Details →Smart Lightning ProtectionCompareZL(S)1 Class-I Surge ArresterZL1 SeriesClass I direct-strike protection, max impulse current 25kA, 10/350us waveform, MOV/gas-tube/composite selectable, response <=50ns, remote-signaling alarm.T1 25 kA10/350μsResponse ≤50 nsMOV/GDT/compositeView Details →Smart Lightning ProtectionCompareT2 Surge Arrester (MOV Type)ZL2-V SeriesClass II secondary protection, nominal 20kA / max 40kA discharge, low residual voltage Up 1.5kV, response <=50ns, 2P/4P, 35mm rail mass deployment.In 20kA/Imax 40kAUp 1.5kVResponse ≤50 ns2P/4PView Details →Smart Lightning ProtectionCompareT2-ZL(S)2 Surge ArresterZL2 SeriesClass II composite SPD, MOV high-flow low-residual structure, In 20kA / Imax 40kA, remote-signaling models report failure, for precision-equipment fronts.Composite structureIn 20kALow residual voltage 1.5 kVOptional remote signalView Details →Smart Lightning ProtectionCompareCoreZL(S)1 Surge Arrester (Class I)ZL1-G SeriesGraphite-gap Class I SPD, max 50kA (10/350us) impulse current, cut-off of AC follow-up current to prevent thermal runaway, modular pluggable hot-swappable.Graphite gapIimp 50kACut-off AC follow-upModular pluggableView Details →Smart Lightning ProtectionCompareRecommendedESF Electrical-Fire DetectorESF Series10-3000mA leakage + -30~125°C temperature dual monitoring, GB 14287 compliant, core terminal for early electrical-fire warning.Leakage monitoringTemperature monitoringGB14287Fire warningView Details →Smart Fire ProtectionCompareEST Temperature DetectorEST Series1-16-channel temperature monitoring, NTC/PT100/thermocouple sensors, real-time sensing of distribution nodes and cable temperature.1-16 channelsNTC/PT100ThermocoupleReal-time sensingView Details →Smart Fire ProtectionCompareAIFA Arc-Fault MonitorFA / FAP SeriesCompliant with UL 1699B, early arc-fault identification, combining the AI engine for precise arc-fire warning.UL 1699BArc identificationAI warningFire preventionView Details →Smart Fire ProtectionCompareFECB2LP Smart Leakage Circuit BreakerFECB2LPSmart leakage circuit breaker integrating leakage protection with remote switching, energy metering, and fire-alarm linkage execution.Leakage protectionRemote switchingEnergy meteringLinked alarmView Details →Smart Fire ProtectionCompareRecommendedESA Full-Factor Smart Meter (Rail-Mount)ESA-1001-R / 1002-R / 1003-RRail-mount installation, synchronous acquisition of voltage/current/power/harmonics, 256 samples/cycle, the energy-data base for energy supervision.Rail-mountFull-factor acquisition256 samples/cycleEnergy baseView Details →Digital EnergyCompareESA Embedded Multi-Function Energy MeterESA Embedded SeriesClass 0.2 accuracy, 2nd-31st harmonic analysis, embedded panel mounting, for cabinet fine-grained metering and efficiency analysis.Class 0.2 accuracy2nd-31st harmonicsEmbeddedFine-grained meteringView Details →Digital EnergyCompareESE Power-Quality MonitorESE SeriesComprehensive power-quality monitoring including harmonics, voltage deviation, frequency deviation and three-phase unbalance, for efficiency analysis.Power qualityHarmonic analysisVoltage deviationEfficiency analysisView Details →Digital EnergyCompareCW Edge Computing GatewayCW Series100+ protocol acquisition, 4G/Wi-Fi/Ethernet cloud, edge computing and rule engine, the hub for energy-data convergence and pre-processing.100+ protocols4G/Wi-Fi/EthernetEdge computingData convergenceView Details →Digital EnergyCompareESA Full-Factor Smart MeterESA-1001-R / 1002-R / 1003-RFull-factor energy-consumption acquisition providing precise energy data for carbon accounting and carbon-emission calculation, carbon-intensity management.Energy acquisitionCarbon accounting baseFull-factorCarbon calculationView Details →Carbon EfficiencyCompareESE Power-Quality MonitorESE SeriesPower-quality and efficiency analysis, identifying energy-saving room, supporting carbon-efficiency optimisation strategies.Efficiency analysisPower qualityEnergy-saving roomCarbon optimisationView Details →Carbon EfficiencyCompareRecommendedFEXLINK Industrial Internet SoftwareV1.0Integrated carbon accounting, carbon-asset management, carbon-reporting and carbon-neutral-park energy governance, private-cloud/on-premise deployment.Carbon accountingCarbon assetsCarbon-neutral parksEnergy governanceView Details →Carbon EfficiencyCompareRecommendedCC Programmable Logic ControllerCC SeriesM7 processor, IEC 61131-3 compliant, up to 64 expansion modules, high-performance industrial-control core.M7 processorIEC 61131-364 modulesHigh performanceView Details →Industrial ControlCompareCR Series Remote I/O StationCR SeriesEtherCAT distributed remote I/O, high-speed real-time communication, flexibly expanding industrial-control-system coverage.EtherCATDistributed I/ORemote expansionHigh-speed communicationView Details →Industrial ControlCompareCW Edge Computing GatewayCW Series100+ protocol acquisition, 4G/Wi-Fi/Ethernet multi-channel cloud, edge computing and rule engine, the industrial-data hub.100+ protocols4G/Wi-Fi/EthernetEdge computingRule engineView Details →Industrial ControlCompareCX Edge Computing WristbandCX SeriesEdge computing with IO acquisition/control: 8 digital inputs + 6 relay outputs, optional 8 analog inputs, RS485/Zigbee/Ethernet/4G, standard 35mm DIN-rail mounting.8DI+6DOOptional 8AIEdge computing35mm DIN railView Details →Industrial ControlCompareHMI Industrial TouchscreenHMI Series4.3-15.6 inch multi-size options, industrial-grade HMI, on-site visual operation and monitoring.4.3-15.6 inchIndustrial gradeHuman-machine interfaceOn-site monitoringView Details →Industrial ControlComparePLC I/O Expansion ModuleAI080 / AO081 / DI160 / DM160 / PT050 / TC060 / RO080, etc.Rich I/O expansion models: analog I/O, digital I/O, temperature collection and relay output.AI/AODI/DMPT/TC temperatureRelay outputView Details →Industrial ControlCompareRecommendedFEXLINK Industrial Internet SoftwareV1.0Private-cloud/on-premise deployment, device monitoring, data visualization, alarm linkage and remote O&M, unified access for all devices.Private cloud/on-premiseDevice managementData visualizationAlarm linkageView Details →PlatformCompareDevice-Management Cloud (SaaS)SaaS EditionMQTT/HTTP API open access, full-lifecycle device management, SaaS deployment, ready to use.MQTT/HTTP APISaaSDevice managementReady to useView Details →PlatformCompareCW Edge Computing GatewayCW Series100+ protocol acquisition, 4G/Wi-Fi/Ethernet cloud, edge computing and rule engine, the edge hub for device access and data convergence.100+ protocols4G/Wi-Fi/EthernetEdge computingRule engineView Details →PlatformCompareAIElectrical-Safety Risk Analysis SystemDiagnostic Engine AI EnginePowered by the Diagnostic Engine AI engine, fusing leakage, temperature, arc and distribution data for intelligent electrical-safety analysis and precise risk identification.Diagnostic Engine AI engineRisk analysisMulti-dim dataPrecise identificationView Details →Industrial AICompareAIArc Early-Warning SystemCorrelation Engine AI EngineBased on the Correlation Engine AI engine, identifying early arc-fault risk from electrical-signal features for early arc-fire warning.Correlation Engine AI engineArc warningEarly identificationFeature analysisView Details →Industrial AICompareCorePrediction Engine Large Model V3.0V3.0AI warning accuracy raised to 97.2%, 168 AI sub-models across scenarios, 1200 national-standard rule-engine items, precise identification.97.2% accuracy168 sub-models1200 rulesLarge modelView Details →Industrial AICompareCoreCoordination Engine Control Four-Engine ArchitectureCoordination Engine Smart Control EngineNanosecond transient current detection, microamp current sensing, leakage detection and control, triac technology, 1us response, 100MHz.1us response100MHz10uA sensingNanosecond detectionView Details →Industrial AICompareYSF Electrical Fire Current-Limiting ProtectorYSF-11120-R / YSF-11140-RMicrosecond current-limiting arc extinction integrated with multi-protection: real-time monitoring and fast handling of short circuit, over/under-voltage, leakage and over-temperature on end-of-line circuits, with adjustable thresholds and RS485 networking, for electrical fire protection of schools, hospitals, malls and charging stations.Current limiting <150μsAdjustable over/under-voltageLeakage 30~1000mAOver-temperature 40~120℃View Details →Electrical SafetyCompareZL(S)5 Pluggable Multi-Pulse Surge Protective DeviceZL5-V-40kA/275-2P etc.Built-in multi-pulse protection chip and backup protector in a pluggable module, supporting full-mode protection (L-N, L-PE, N-PE) and remote-signalling dry contacts, for first-stage protection in high-lightning areas and induced/operational overvoltage protection in industrial parks, commercial buildings and public facilities.Multi-pulse 40kABuilt-in backup protectorFull-mode L/N-PERemote signalling contactView Details →Smart Lightning ProtectionCompareWSR Online Insulation Resistance MonitorWSR-18100-R / WSR-18211-R / WSR-18211-BOnline insulation-condition monitoring for cables, motors and switchgear, supporting 1~8 circuits, 500V fixed or 50/100/250/500V adjustable output, dielectric absorption ratio / polarisation index calculation and RS485/Bluetooth communication.Insulation 0.1MΩ~10GΩ1~8 circuitsDAR/PIRS485 MODBUS/BluetoothView Details →Smart Lightning ProtectionCompareDDSU1589 Single-Phase Electronic Energy Meter (DIN-rail)DDSU1589DIN-rail single-phase energy meter compliant with GB/T 17215.321-2021, supporting direct single-phase line/neutral connection, bidirectional high-accuracy metering and 5-tariff/14-period time-of-use billing, with DL/T645-2007/1997 and MODBUS-RTU dual-protocol communication.DIN-railBidirectional meteringDL/T645 + MODBUS-RTU5 tariffs/14 periodsView Details →Digital EnergyCompareRECOMMENDED BUNDLESRecommended BundlesTypical selection bundles packed by scenario for a rapid complete data loop.Electrical Safety Monitoring Combo

Full-element coverage of leakage + temperature + arc + power quality — the standard for electrical-fire prevention in distribution cabinets.

ESA Full-Factor Smart MeterESA-1001-R / 1002-R / 1003-R ESF Electrical-Fire DetectorESF Series EST Temperature DetectorEST Series ESE Power-Quality MonitorESE Series

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Smart Lightning Protection Combo

SPD online monitoring + lightning-current capture + ground-resistance sensing + lightning-protection gateway on the cloud — a full-chain lightning-protection data loop.

FS Lightning-Protection MonitorFS-33211 FL Lightning-Current MonitorFL Series FR Ground-Resistance DetectorFR Series FG Smart Lightning GatewayESX Series

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Edge Computing Gateway Combo

Edge acquisition + local AI analysis + cloud access — the standard networking solution for bringing multi-circuit devices to the cloud.

CW Edge Computing GatewayCW Series ESX Smart Edge Computing GatewayESX Series CX Edge Computing WristbandCX Series

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Products 56+ Smart Hardware

Smart Lightning Protection Combo

Edge Computing Gateway Combo

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