We have this DOORBELL PUSH BUTTON mounted for a 2 family house with blue LED lights to replace the old. Fits, looks good and also worked about 3 weeks, then the LED lighting was from. (Scorched on the board at Elt connection, although only about 9 volts the provided 12 Volt input).
Short telephone conversation with the manufacturer and problematic exchange with replacement was ok. Can happen but once.
After about 4 weeks, the LED lighting was off again, scorched etc. Schicker scrap for 25!