Water use
Monitor
The ordinary view: current meter reading, observed consumption, and receiver health without SDR configuration clutter.
No verified meter yetOpen Find Meter, discover candidates, select the meter you are authorized to monitor, and verify its displayed reading.
Current reading
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Today
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Estimated flow
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Signal
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Recent consumption
Usage finding
Insufficient evidence
Yesterday
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This week
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30 day average
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Last transmission
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Listen → Detect → Display
Find Meter
Easy mode handles SDR tuning and protocol detection automatically. Select the dongle and METERTRACE starts listening.
Automatic water-meter listener
1
Select dongle
Choose your RTL-SDR in the browser USB picker.
2
Listen
METERTRACE chooses the receive profile and listens for validated frames.
3
Detect protocol
Protocol appears automatically when a checksum-valid packet is decoded.
ReadySelect the RTL-SDR. METERTRACE will begin listening immediately after the browser grants access.
Receiver
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Protocol
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Validated meter packets
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Framed RF packets
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RF bursts
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Decoder evidence
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Meters seen
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Listening at
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Profile
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Live decoded meter packets
| Time | Protocol | Meter ID | Raw reading | Validation |
|---|---|---|---|---|
| No decoded meter packets yet. | ||||
Live framed RF packets
| Time | PHY candidate | Frequency | Bit rate | Sync errors | Integrity | Raw prefix |
|---|---|---|---|---|---|---|
| No framed RF packets yet. | ||||||
RF signal clusters
| Frequency | Bursts | Median duration | Median repeat | Peak above floor | Profile |
|---|---|---|---|---|---|
| No temporal RF bursts characterized yet. | |||||
1 · Identify the physical meter
Identification suggestionEnter a manufacturer or RF module to see likely protocol/frequency hints. These are hypotheses until RF evidence confirms them.
2 · Discover meter broadcasts
No candidates yet. Start discovery or load a simulation from Project.
3 · Identify my meter
Start a guided evidence test after candidates have repeated packets. METERTRACE records a baseline observation window, then compares only packets received after the controlled-use step begins.
Controlled-use intervalBaseline recorded. Run the controlled amount of water, then wait for fresh packets.
Baseline candidates
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Fresh packets
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Elapsed
0 s
4 · Verify reading
Select a candidate first.
CalibrationEnter the physical reading. One reference tests common decimal scales; two or more references can fit scale and offset.
Evidence principle
A decoded number is not automatically gallons. METERTRACE stores the raw value and the conversion separately so calibration can be revised later without destroying the original evidence.
Derived from immutable observations
History
Inspect cumulative readings and interval consumption. Raw decoder values remain preserved even when the calibration changes.
Cumulative reading
Observed consumption rate
Consumption in range
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Usage sessions
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Zero-use intervals
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Peak estimated flow
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Usage sessions
| Start | Duration | Volume | Peak rate |
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Consumption summary
| Period | Consumption | Intervals |
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Continuous-use evidence
Waiting for analysisMore observations may be needed.
Detection thresholds
Observations
| Time | Meter | Raw | Converted | Unit | RSSI | Decoder | State |
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Advanced · passive RF workspace
RF
Configure receive backends, inspect receiver health, and take passive spectrum snapshots. These controls stay out of Easy mode.
Receiver
RF health
NO DATA—
Signal history
Spectrum
Waterfall history
Decoder log
No decoder log yet.
Advanced · packet inspector
Packets
Filter normalized observations, inspect preserved decoder evidence, and compare two packets without changing the underlying records.
Packet list
| Time | Meter | Protocol | Raw reading | RSSI | Decoder | CRC / valid |
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Selected packet
Select a packet.
Compare two packets
Check two packet rows to compare normalized and raw fields.
Advanced · passive evidence
Evidence
Capture raw IQ around a signal and inspect decoder evidence without transmitting or interacting with the meter.
IQ capture
No capture runningIQ data stays in the browser and downloads locally when capture stops.
Unknown meter path
If decoding fails, preserve frequency, timing, signal strength, raw decoder output, and IQ evidence for legitimate protocol investigation. METERTRACE v2.8.4 remains passive receive-only and does not attempt active interaction or credential recovery.
v2.8.4 browser RF toolingSpectrum snapshots, waterfall history, packet inspection, raw IQ capture, and preserved decoder evidence are available. Automated unknown-meter evidence ZIP packaging remains a later milestone.
Latest raw evidence
No raw decoder evidence loaded.
Local-first
Project
A project represents one monitored meter. Meter metadata, conversion, observations, RF settings, and notes are stored locally in this browser unless you explicitly export them.
Browser Direct runtime
Checking browser capabilities…WebUSB requires a compatible browser and secure context for live hardware. Replay and simulation work without WebUSB.
Project profile
Project import / export
Data replay
Load JSON or CSV observations and use the monitor without RF processing.
Simulation / sample data
Privacy
Meter IDs and water-use history can reveal occupancy patterns. METERTRACE defaults to local storage, has no cloud account requirement, and does not upload meter data. Neighboring broadcasts may be visible during discovery; retain only data needed for meters you are authorized to monitor.