BluSENSE 100 Hero — BluSENSE

BluSENSE Series 100

BluSENSE 100

Flow & Temperature Monitor

A simple, low-cost logger for Hall-effect flow meters and two temperature points. It works on its own, or reports to a BluSENSE 300 or Home Assistant over Wi-Fi. Powered over USB-C from the supplied wall plug or a standard USB-C power bank.

Inputs 2× Pulse (Hall-effect) · 2× Temperature
Power USB-C · Wall plug or power bank
Works With BluSENSE 300 · Home Assistant
Data SD card logging · Daily data by email
BluSENSE 100 Flow & Temperature Monitor
BluSENSE 100 — Flow and Temperature, Together
BluSENSE 100 Flow & Temperature Monitor

Flow and Temperature, Together

Your Flow Meter Is Already Talking.
The BluSENSE 100 Listens.

Connect a Hall-effect flow meter to one of the two pulse inputs. The BluSENSE 100 counts pulses continuously and records flow and temperature every 60 seconds, with each reading timestamped by its onboard real-time clock.

Its two temperature inputs capture hot and cold at the same time: cold water at the meter, or hot and cold at the water heater, a fixture or a recirculation pump. Every record is saved to the SD card and emailed to you as a CSV every day.

Two pulse inputs. Two temperature inputs. One compact logger.

BluSENSE 100 — Key Benefits

Key Benefits

Why Professionals Choose the BluSENSE 100

A simple, low-cost logger for flow and temperature: USB-C powered, Wi-Fi connected, and ready to work on its own.

USB‑C Power, Wall or Battery
Plug into the supplied USB-C wall plug, or run from a standard USB-C power bank (not included). The BluSENSE 100 is optimized for low-power operation, and no licensed electrician is required.
Built for Hall‑Effect Flow Meters
Two pulse inputs for Hall-effect flow meters. Pulses are counted continuously and recorded every 60 seconds. Coming soon: support for up to two Droplet water sensors over Wi-Fi, reporting flow rate and flow per period.
Dual Pulse, Dual Temperature
Two DS18B20 1-Wire temperature inputs capture hot and cold at the same time: cold water at the meter, or hot and cold at the water heater, a fixture or a recirculation pump.
Standalone or Networked
Works on its own with no hub required. Pair it with a BluSENSE 300 or Home Assistant over Wi-Fi to add threshold alerts by email or text and a live dashboard.
Daily Data by Email
Your complete data load is emailed as a CSV to up to two recipients every day: at midnight local time by default, or at any time you choose.
Data Kept Through Outages
Data is preserved on the SD card during communication outages, and unsent daily emails are re-sent for up to 14 days afterward. The unit must stay powered, by wall plug or power bank, to keep collecting data.
No Subscription Required
No subscription is required. Your data stays on the SD card, plus your BluSENSE 300 if you have one, and is never stored on third-party servers.
Built in California
Designed, built and tested in California, USA.
BluSENSE 100 — Where It Excels

Real-World Applications

Where the BluSENSE 100 Excels

Flow from a Hall-effect meter and hot and cold temperatures, logged together every 60 seconds wherever you need them.

← Swipe to explore →
Use Case
Flow & Cold Water at the Meter

Connect a Hall-effect flow meter and place a temperature sensor at the meter to log flow and cold-water temperature together.

Use Case
Water Heaters

Place both temperature sensors at the water heater to capture hot and cold temperatures at the same time.

Use Case
Fixtures

Log hot and cold temperatures at an individual fixture, recorded every 60 seconds and timestamped by the onboard clock.

Use Case
Recirculation Pumps

Monitor hot and cold temperatures at a recirculation pump, with every record saved to the SD card and emailed to you daily.

Use Case
Adding to a 300 or Home Assistant System

Add BluSENSE 100 units to a BluSENSE 300 or Home Assistant system over Wi-Fi for threshold alerts by email or text and a live dashboard.

BluSENSE 100 Technical Specifications

Under the Hood

Technical Specifications

BluSENSE 100 Flow & Temperature Monitor: flow and hot and cold temperature, logged every 60 seconds.

Sensor Inputs

2 × pulse inputs
Hall-effect flow meters only
2 × DS18B20 1-Wire temperature inputs
Simultaneous hot & cold temperature capture
Cold at the meter; hot & cold at the water heater, a fixture or a recirculation pump
Coming soon: up to 2 Droplet water sensors over Wi-Fi (flow rate and flow per period)

Sampling & Storage

60-second sample period
Pulses counted continuously; temperatures and data recorded each period
Onboard real-time clock (RTC)
SD card storage, CSV records
Data preserved on the SD card during communication outages
Unit must stay powered (wall plug or power bank) to keep collecting data

Connectivity

Wi-Fi
Cellular via a customer-supplied Wi-Fi hotspot
Works standalone, no hub required
Reports to a BluSENSE 300 or Home Assistant over Wi-Fi
Does not connect to the Series 200

Data Delivery & Alerts

Daily data by email (CSV) to up to 2 recipients
Sent at midnight local time by default; configurable to any time
Unsent daily emails re-sent for up to 14 days after an outage
Threshold alerts by email or text when paired with a BluSENSE 300 or Home Assistant
Live dashboard when paired with a BluSENSE 300 or Home Assistant

Power & Physical

USB-C powered
Runs from a standard USB-C power bank (not included)
Optimized for low-power operation
Compact enclosure; not sealed, indoor use only
Operating temp: 0°C to 45°C (32°F to 113°F)
No licensed electrician required

Security

Outbound email uses TLS 1.2 with AES-GCM
Firmware signed with RSA-2048/SHA-256 and verified on the device before flashing
Data stored on the SD card, plus the BluSENSE 300 if present
Never stored on third-party servers
← Swipe to explore →

Sensor Inputs

2 × pulse inputs
Hall-effect flow meters only
2 × DS18B20 1-Wire temperature inputs
Simultaneous hot & cold temperature capture
Cold at the meter; hot & cold at the water heater, a fixture or a recirculation pump
Coming soon: up to 2 Droplet water sensors over Wi-Fi (flow rate and flow per period)

Sampling & Storage

60-second sample period
Pulses counted continuously; temperatures and data recorded each period
Onboard real-time clock (RTC)
SD card storage, CSV records
Data preserved on the SD card during communication outages
Unit must stay powered (wall plug or power bank) to keep collecting data

Connectivity

Wi-Fi
Cellular via a customer-supplied Wi-Fi hotspot
Works standalone, no hub required
Reports to a BluSENSE 300 or Home Assistant over Wi-Fi
Does not connect to the Series 200

Data Delivery & Alerts

Daily data by email (CSV) to up to 2 recipients
Sent at midnight local time by default; configurable to any time
Unsent daily emails re-sent for up to 14 days after an outage
Threshold alerts by email or text when paired with a BluSENSE 300 or Home Assistant
Live dashboard when paired with a BluSENSE 300 or Home Assistant

Power & Physical

USB-C powered
Runs from a standard USB-C power bank (not included)
Optimized for low-power operation
Compact enclosure; not sealed, indoor use only
Operating temp: 0°C to 45°C (32°F to 113°F)
No licensed electrician required

Security

Outbound email uses TLS 1.2 with AES-GCM
Firmware signed with RSA-2048/SHA-256 and verified on the device before flashing
Data stored on the SD card, plus the BluSENSE 300 if present
Never stored on third-party servers
BluSENSE 100 — The BluSENSE Ecosystem

The BluSENSE Ecosystem

How the BluSENSE 100 Works with Your Network

The BluSENSE 100 works on its own, or reports over Wi-Fi to a BluSENSE 300 or Home Assistant. Start where you need it and add more when you're ready.

← Swipe to explore →
BluSENSE 100 standalone operation
Deployment Option 1
Standalone Operation

No hub required. The BluSENSE 100 logs flow and temperature to its SD card and emails a CSV of your data to up to two recipients every day. On its own it has no alerts, text messages or dashboard.

BluSENSE 100 with a BluSENSE 300 Edge Analyzer
Deployment Option 2
With a BluSENSE 300 Edge Analyzer

The BluSENSE 100 reports to a BluSENSE 300 over Wi-Fi, adding threshold alerts by email or text and a live dashboard. Your data is stored on the SD card and on the 300.

BluSENSE 100 with Home Assistant
Deployment Option 3
With Home Assistant

Already running Home Assistant? The BluSENSE 100 reports to it over Wi-Fi, adding threshold alerts by email or text and a live dashboard.

BluSENSE 100 — What's Included

Everything You Need

What's Included

$850 MSRP

In the Box
BluSENSE 100 Hardware
  • BluSENSE 100 Flow & Temperature Monitor
  • USB-C cable
  • USB-C wall power plug
  • SD card
  • Quick-start guide

Pulse input cables are not supplied. Running on battery? Use any standard USB-C power bank (not included).

Data Access
How Your Data Reaches You
  • Daily data by email: your complete CSV data load, sent to up to two recipients at midnight local time by default, or at any time you choose
  • SD card: every record saved locally as CSV
  • BluSENSE 300 or Home Assistant: reports over Wi-Fi, adding threshold alerts by email or text and a live dashboard
  • No subscription required
Optional
Support Plans
The Starter
$500 one-time
Sensor selection, hardware design review, and compatibility verification — before deployment.
The Partner
$100/month · Billed annually at $1,200
Ongoing system optimization, data review, and remote support throughout your project.
The Advisor
$300/month · Billed annually at $3,600
Senior expert consultation turning your data into outcomes — M&V, ESG, utility incentives, and strategic guidance.
← Swipe to explore →
In the Box
BluSENSE 100 Hardware
  • BluSENSE 100 Flow & Temperature Monitor
  • USB-C cable
  • USB-C wall power plug
  • SD card
  • Quick-start guide

Pulse input cables are not supplied. Running on battery? Use any standard USB-C power bank (not included).

Data Access
How Your Data Reaches You
  • Daily data by email: your complete CSV data load, sent to up to two recipients at midnight local time by default, or at any time you choose
  • SD card: every record saved locally as CSV
  • BluSENSE 300 or Home Assistant: reports over Wi-Fi, adding threshold alerts by email or text and a live dashboard
  • No subscription required
Optional
Support Plans
The Starter
$500 one-time
Sensor selection, hardware design review, and compatibility verification — before deployment.
The Partner
$100/month · Billed annually at $1,200
Ongoing system optimization, data review, and remote support throughout your project.
The Advisor
$300/month · Billed annually at $3,600
Senior expert consultation turning your data into outcomes — M&V, ESG, utility incentives, and strategic guidance.
BluSENSE 100 FAQ Header

BluSENSE 100 FAQ

Questions About the BluSENSE 100?

Answers on flow meter compatibility, installation, power, data delivery, and working with a BluSENSE 300 or Home Assistant. Can't find what you're looking for? Talk to an expert.

BluSENSE 100 CTA — BluSENSE

BluSENSE 100

Ready to Start Logging Flow and Temperature?

Two pulse inputs for Hall-effect flow meters, two temperature inputs for hot and cold, and your data emailed to you every day. USB-C powered, Wi-Fi connected, and no licensed electrician required.

No subscription required. Designed, built and tested in California.