Wall Socket Insertable Node is a board which you can insert into basically every 220 -110 V wall socket to control and monitor it.
Very slim (only 10.2mm top layer components and <13mm overall height).
Embedded custom AC/DC switching power supply with very low profile transformer
AC current sensor ACS712 (optional)
Hardware window-watchdog (optional). Watchdog is very important but with MySensors we can't use atmega's watchdog (it is used in deep sleep mode in MySensors library). So I suggest using hardware watchdog to improve stability.