# Pow-U, HAN port reader for M-bus meters / ESP32

Reader for smart energy meters with M-bus. External power normally not needed.

- **Seller:** [amsleser.no](https://www.lectronz.com/stores/amsleser), Frei, Norway
- **Price:** €58.40 (EUR, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Home automation, ESP32
- **HS code:** 85437000
- **Product page:** https://www.lectronz.com/products/pow-u-han-port-reader-for-m-bus-meters-esp32

## Options

**Product options**

- With 3D-printed enclosure and cable (15cm RJ45) [Add €2.40]
- With 3D-printed enclosure and cable (1 meter RJ45) [Add €2.80]
- With 3D-printed enclosure and cable (30cm RJ12, for M-bus meters with RJ12 socket) [Add €2.40]
- With 3D-printed enclosure, no cable [Add €1.60]
- With cable (15cm RJ45), no enclosure  [Add €0.80]
- With cable (1 meter RJ45), no enclosure  [Add €1.20]
- With cable (30cm RJ12, for M-bus meters with RJ12 socket), no enclosure  [Add €0.80]
- Assembled board only, no enclosure or cable

## Links

- [Documentation](https://amsleser.no/hjem/7-pow-u-universal.html)
- [Code](https://github.com/UtilitechAS/amsreader-firmware)

## Images

![Pow-U, HAN port reader for M-bus meters / ESP32](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MzU5MSwicHVyIjoiYmxvYl9pZCJ9fQ==--0fc360eee3bb217237f78bba6714f2eaeac981ee/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJQTkciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--4157f0fb908a7cf53a9fb69e24400c01800a5257/Pow-U%20ESP32%20boks%20og%20kort.PNG)
![Pow-U, HAN port reader for M-bus meters / ESP32](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MzU5MywicHVyIjoiYmxvYl9pZCJ9fQ==--d78e4283dcecb8c618bfad91ac40f16be3c3956c/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJQTkciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--4157f0fb908a7cf53a9fb69e24400c01800a5257/Pow-P1_2.PNG)
![Pow-U, HAN port reader for M-bus meters / ESP32](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTk0NiwicHVyIjoiYmxvYl9pZCJ9fQ==--3614c96d6361d2240557ba6de7b366ba92999f18/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/20211204_142037.jpg)

## Description

Pow-U is delivered with ESP32 microcontroller/wifi module. This will enable certain functions that were not available on the previous Pow-U design such as connection to SSL MQTT broker, reading energy prices from [Entso-E](https://transparency.entsoe.eu/) with graphical visualization.
 
 Delivered assembled, tested and programmed with latest versjon firmware [AmsToMqttBridge](https://github.com/gskjold/AmsToMqttBridge), which isOpen Source firmware. 

Based on ESP32-S2 wifi-module.

Pow-U connects to your local wifi, where it displays a web user interface page that can be opened from a device (PC, tablet, phone, ...) that connected your internal network . No cloud service involved, no data is sent outside of your home network.

Connects to your smarthome system via MQTT. A separate MQTT setup for direct integrationa and autodetect with Home Assistant  is included in the firmware.

**Smart meters that deliver M-bus signal on pins 3/4 of an RJ12 socket:**
You will use an RJ-12/RJ12 cable and insert the RJ12 connector centered in the RJ45 socket of the Pow-U. See information in [Pow-U user manual](https://www.amsleser.no/index.php?controller=attachment&id_attachment=54). 

Documentation: See the tab "Vedlegg" on the linked page.

If you chose the option "Assembled board only, no enclosure or cable", you can 3-print the enclosure yourself from provided STL files, see "Vedlegg" on linked page.

Is this the right product for you? Please consult: https://github.com/UtilitechAS/amsreader-firmware/wiki/Known-hardware-configurations

## Shipping policy

We currently ship to outside Norway at least one time per week.