143070- CALYPSO II DC wireless doorbell battery powered, learning system, 36 ringtones, 300m range
Wireless doorbell, operation range in open area up to 300m, hermetic button, radio transmission (frequency 433MHz), 6-step volume adjustment, volume range: 60–85 dB, 36 polyphonic ringtones to choose from, 3 modes of signaling (visual, sound, visual and sound), the number of receivers and buttons can be expanded if needed, learning system. The product does not require a cable connection.