Documentation
Technical data
Specifications, variants and scope of delivery of the Smart Meter Adapter.
Variants
Which variant you need depends solely on the meter. The meter finder makes the decision for you.
| Variant | Part number | Supported interfaces | Editions |
|---|---|---|---|
| SMA MBUS variant | SMA-MBUS |
M-Bus, Wireless M-Bus | Secured, Open CPU |
| SMA UART variant | SMA-UART |
DSMR (P1), Infrared (IEC 62056-21), HAN | Secured, Open CPU |
| IR reading head (IEC 62056-21) | SMA-IRH |
Infrared (IEC 62056-21) | Accessory |
Specifications
- Power supply
- USB-C, or from the meter where it feeds the interface
- Power consumption
- typ. 1 W, depending on WiFi signal strength
- Protection class
- IP20 — indoor use only
- Ambient temperature
- −25 °C to +75 °C
- Humidity
- ≤ 95 % relative humidity, non-condensing
- Adapter dimensions
- 18 × 45 × 52.8 mm (W × D × H); 55.6 mm with the DIN rail clip, 67.9 mm including the angled antenna connector
- Width
- 18 mm — 1 module unit of a standard DIN rail
- IR reading head dimensions
- Ø 32 mm, 24 mm deep; magnetic mount to IEC 62056-21
- Mounting
- DIN rail, wall mounting or adhesive mounting; IR reading head magnetically on the meter
- WiFi operating mode
- Access point and infrastructure
- WiFi encryption
- IEEE 802.11 open, WEP, WPA, WPA2
- Antenna
- Detachable WiFi antenna with SMA connector; internal antenna for Wireless M-Bus
- Meter interfaces
- M-Bus, Wireless M-Bus, DSMR (P1), infrared to IEC 62056-21
- Optical interface
- IEC 62056-21 IR reading head, magnetic, connected over RJ12 to the UART variant
- Data interfaces
- Web dashboard (HTTPS/HTTP), JSON REST API, MQTT client, Modbus TCP
- Concurrent connections
- maximum 3
- Connection cables
- RJ12 and RJ45 included; third-party cables must have mirrored pinout, max. 3 m
- Decryption
- On the device, using the meter key from the grid operator
- Data storage
- No consumption values are stored on the device
Figures as per the datasheet. Which readings are actually available depends on the meter type and the grid operator.
Dimensioned drawings
All measurements in millimetres. The adapter is 18 mm wide and therefore occupies one module unit on the DIN rail; the IR reading head follows IEC 62056-21.
Status LED
The LED on the front shows the operating state at a glance.
| Colour | State | Meaning |
|---|---|---|
| Steady | The device is booting. This can take up to 30 seconds. | |
| Steady | Connected to WiFi, the device is ready. | |
| Steady | Access point active — a direct connection to the device is possible. | |
| Steady | Error receiving meter data, or a WiFi connection problem. | |
| 2 seconds | The device is being reset to factory settings. | |
| Blinking | A data packet was received from the meter; the LED then returns to its previous state. With Wireless M-Bus the LED does not blink but stays steady green. | |
| Steady | The device is in recovery mode. |
Button
A single button covers both access and factory reset.
| Duration | Meaning |
|---|---|
| up to 3 seconds | Activates the access point — direct access from a phone or laptop becomes possible. |
| 10 seconds or more | Factory reset. All meter data and settings are erased. |
What’s in the box
Adapter
- Smart Meter Adapter in the chosen variant
- RJ12 and RJ45 connection cables
- USB-C cable for power
- Detachable WiFi antenna (SMA connector)
- DIN rail clip
- Double-sided adhesive pad
IR reading head (IEC 62056-21)
- IEC 62056-21 IR reading head with magnetic mount
- RJ12 connection cable
RJ12 and RJ45 are both included — you do not have to choose a connector type when ordering.
