For indoor use (wall mounting).

Ding dong sound, 2 notes (80dB @ 1m)

+ back door option (warbling sound).

Dimensions: 20,0 x 20,0 x 5,7cm.

For wired use: 4 x 1,5V (batteries) or

220-240V (with 8V transformer).

Price: available @ gallery De Hermelijn