Sump Pump Monitor | Auto Dry-Run Protection | Smart Power Monitoring | Local Only | No Cloud | Home Assistant & MQTT | OpenClaw & Local API

Protect Your Home with Intelligent MonitoringThe PumpFuse Sump Pump Monitor is a smart inline power monitor designed to safeguard your basement from flooding and protect your pump from burnout. By sitting directly between your wall outlet and your pump, it measures real-time power consumption at one sample per second to learn your pump's "normal" operating signature.Automatic Failure DetectionPumpFuse automatically detects and alerts you to five critical failure categories:Dry Runs: Detects low power usage when water is absent.Blockages: Identifies high power spikes caused by debris.Excessive Runtime: Alerts you if the pump runs longer than usual.Rapid Cycling: Detects frequent on/off cycles that shorten pump life.Missed Cycles: Monitors for expected activity to ensure the pump hasn't failed silently.Active Hardware ProtectionUnlike simple sensors that only send notifications, PumpFuse takes action. When an anomaly is detected, the internal relay can automatically cut power to prevent motor burnout. Featuring a configurable lockout timer and a retry limit, the device ensures your pump and relay contacts are never cycled indefinitely, providing true "set-and-forget" peace of mind.Privacy-First: No Cloud, No SubscriptionsEverything runs 100% locally on your home Wi-Fi network. There are no monthly fees, no cloud dependencies, and no accounts to create. Your data stays in your home. For advanced users, PumpFuse features full Home Assistant integration via MQTT (26 auto-discovered entities) and a REST API for custom setups.User-Friendly Companion AppThe iOS and Android app provides a professional-grade dashboard without the complexity. View a 24-hour activity timeline, check your pump’s vitals, and scroll through alert history at a glance. Configuration is simple—use intuitive sliders and toggles to set your protection parameters with no technical expertise required.Professional Hardware PlatformModel: PFA01 PlatformProcessor: ESP32-C3 ModuleMetering: BL0937 high-precision power metering ICCapacity: 10A Heavy-Duty RelayUpdates: Easy Over-the-Air (OTA) firmware updates via local network

• Zero-Config Protection — Learns your pump automatically. No thresholds to set. Cuts power on dry run or blockage detection. The device watches every pump cycle, builds a power baseline in about five cycles, and arms itself — no electrician, no app wizards, no YouTube tutorials. If it detects a dry run drawing abnormally low power, it opens the relay and kills the circuit before your motor burns out. Same thing for blockages that spike power above the learned range. You just plug it in and forget about it.
• Smart Monitoring — Tracks every pump cycle, alerts on excessive runtime, rapid cycling, inactivity, or power anomalies. Five distinct alert types cover the failure modes that actually destroy sump pumps: low-power dry runs, high-power blockages, motors that won't shut off, rapid on-off-on cycling, and pumps that haven't run when they should have. A 24-hour activity chart in the app shows exactly when and how long each cycle ran, so you can spot trends before they become emergencies.
• No Cloud, No Subscription — Works entirely on your local network. Your data stays home. Works forever. There is no account to create, no monthly fee, and no server that can be sunset. The device talks to your phone over Wi-Fi using a local REST API. If your internet goes down, the monitor keeps protecting your pump and logs every event. Your basement doesn't stop being important just because AWS has an outage.
• Home Assistant Ready — 26 auto-discovered entities via MQTT. Full REST API and MCP for AI assistants. Plug the device into your Home Assistant setup and entities appear automatically — power readings, pump state, relay control, alert sensors, protection mode, and more. Build dashboards, write automations ("if pump hasn't run in 3 days, send a notification"), or query the device with an AI assistant through the MCP tool interface. Add push notifications to your phone in minutes with the HA Companion App — a ready-to-use automation template is included in the docs.
• Battery Backup Compatible — Auto-learns charger baseline power. No special configuration needed. If your sump pump line also feeds a battery backup charger, the device's bimodal learning algorithm separates the charger's constant draw from the pump's intermittent cycles. No jumpers to set, no "charger offset" field to guess at. It just works.
• Easy Setup — Plug pump into device, connect to WiFi via app, done. Full protection active within a few cycles. Open the PumpFuse app, tap Add Device, hold the button for BLE pairing, pick your Wi-Fi network, and you're done. The device starts learning immediately. Within about five pump cycles you have full anomaly detection, relay protection, and Home Assistant integration — typically less than a day for most basements.