Specification
Dimensions
Mounting is magnetic, onto the metal ring around the meter's optical interface. See Mounting on the meter.
Power
| Property | Value |
|---|---|
| Input voltage | 2.1–5.5 V |
| Battery size | 2 × AAA (LR03 / R03) |
| Battery voltage | 1.2–1.5 V |
| Power socket | USB-C |
| USB-C supply | 5 V, 5 W |
| Source priority | USB-C is used automatically when both are present |
| Reverse polarity | Protected |
See Power and batteries.
Environment
| Property | Operation | Storage |
|---|---|---|
| Temperature | 0 to 50 °C | −10 to 60 °C |
| Humidity | 10–90 %, non-condensing | 5–95 %, non-condensing |
Communication
Wi-Fi
| Property | Value |
|---|---|
| Band | 2.4 GHz only |
| Standard | Wi-Fi 6 (802.11ax) |
| Authentication | WPA, WPA2, WPA3 |
| Modes | Client (station) and Access Point |
5 GHz and 6 GHz networks are not supported.
Zigbee
| Property | Value |
|---|---|
| Radio | IEEE 802.15.4 |
| Stack | Zigbee 3.0 |
| Cluster library | ZCL v8 |
| Role | End Device |
| Channels | 11–26 |
Antenna
| Property | Value |
|---|---|
| Frequency | 2.4 GHz |
| Antenna connector | SMA male |
| Enclosure connector | SMA female |
| Detachable | Yes |
See Antenna and signal.
USB
| Property | Value |
|---|---|
| Connector | USB-C |
| Function | Power input and serial console |
| Serial settings | 115200 8N1 |
Optical interface
| Property | Value |
|---|---|
| Standard | IEC 62056-21 |
| Components | Infrared emitter and receiver |
| Wavelength | 850–940 nm |
| Baud rates | 300, 600, 1200, 2400, 4800, 9600, 19200 |
Supported meters
| Property | Value |
|---|---|
| Optical interface | IEC 62056-21 |
| Protocols | IEC 62056-21:2002 and DLMS/COSEM |
| IEC 62056-21 modes | A, B, C, D, E |
| DLMS/COSEM | Pull mode |
| DLMS authentication | None, Low (password/LLS), High (GMAC) |
| DLMS activation | Via mode E, or direct communication |
| DLMS encryption | Supported (GUEK + AK) |
Not supported: SML, M-Bus, ANSI C12.18/19.
See Before you buy and Meter protocols.
Temperature sensor
| Property | Value |
|---|---|
| Range | −10 to 80 °C |
| Error | < 1 °C |
Reported on the Dashboard and, over Zigbee, through the Temperature Measurement cluster (0x0402).
Reading schedule
| Property | Value |
|---|---|
| Minimum interval | 1 minute |
| Maximum interval | 6 months |
| Units | Minutes, hours, days, months |
| Trigger time | Configurable within the period |
See Meter readings → Schedule.
Web interface and API
| Property | Value |
|---|---|
| Transport (client mode) | HTTPS, port 443, self-signed certificate |
| Transport (Access Point) | HTTP, port 80 |
| Access Point address | 192.168.4.1 |
| Authentication | Challenge-response, SHA-256; bearer token |
| Token lifetime | 1800 s |
| Interface languages | English, German, Polish |
Note
This specification is subject to change without further notice.