Open Source • Local • ESPHome
Monitor Your Water & Energy
Without the Cloud
S0tool turns any pulse-based meter into a smart sensor — 100% local, open source, Home Assistant ready.
Why S0tool?
Real-Time Monitoring
Track water and energy live — no delays, no cloud.
Smart Integration
Transform any pulse-based meter into a smart sensor.
Energy Optimization
Feeds directly into the Home Assistant Energy Dashboard.
100% Local & Private
No cloud, no subscriptions. Your data stays on your network.
By the Numbers
20+
Compatible Meters
100%
ESPHome Ready
100%
HA Ready
100%
Local
100%
Open Source
24/7
Monitoring
Compatibility
| Brand | Model | Type | Status | Region |
|---|---|---|---|---|
| Elster | V200 | 💧 Water | Compatible | NL |
| Itron | Aquadis+ | 💧 Water | Compatible | NL |
| Sensus | 620 | 💧 Water | Compatible | NL |
| Maddalena | CD SD Plus | 💧 Water | Compatible | BE |
| Actaris | Single-Jet | 💧 Water | Compatible | NL |
| Zenner | MNK-RP-N | 💧 Water | Compatible | DE |
| Kamstrup | Multical 21 | 💧 Water | Compatible | EU |
| Diehl | Hydrus | 💧 Water | Compatible | EU |
| Eastron | SDM120 / SDM220 | ⚡ kWh | Compatible | EU |
| ABB | B23 / B24 series | ⚡ kWh | Compatible | EU |
| Schneider | iEM3000 series | ⚡ kWh | Compatible | EU |
| Carlo Gavazzi | EM24 / EM340 | ⚡ kWh | Compatible | EU |
| Finder | 7E.23 / 7E.36 | ⚡ kWh | Compatible | EU |
| Eltako | DSZ15D-3x80A | ⚡ kWh | Compatible | EU |
| Brand | Model | Type | Status | Region | Notes |
|---|---|---|---|---|---|
| Elster | V200 | 💧 Water | Compatible | NL | |
| Itron | Aquadis+ | 💧 Water | Compatible | NL | |
| Sensus | 620 | 💧 Water | Compatible | NL | |
| Maddalena | CD SD Plus | 💧 Water | Compatible | BE | |
| Actaris | Single-Jet | 💧 Water | Compatible | NL | |
| Zenner | MNK-RP-N | 💧 Water | Compatible | DE | |
| Kamstrup | Multical 21 | 💧 Water | Compatible | EU | |
| Diehl | Hydrus | 💧 Water | Compatible | EU |
| Brand | Model | Type | Status | Region | Notes |
|---|---|---|---|---|---|
| Eastron | SDM120 / SDM220 | ⚡ kWh | Compatible | EU | S0 pulse terminals |
| ABB | B23 / B24 series | ⚡ kWh | Compatible | EU | External S0 wiring required |
| Schneider | iEM3000 series | ⚡ kWh | Compatible | EU | Needs S0 connection setup |
| Carlo Gavazzi | EM24 / EM340 | ⚡ kWh | Compatible | EU | Pulse settings configurable |
| Finder | 7E.23 / 7E.36 | ⚡ kWh | Compatible | EU | DIN rail mountable |
| Eltako | DSZ15D-3x80A | ⚡ kWh | Compatible | EU | DIN rail mountable |
Official Made for ESPHome
S0tool carries an official Made for ESPHome license — guaranteeing seamless integration.
Get in Touch
Questions, bugs, or ideas?