Never miss a visitor again with a Honeywell Home RDWL915W wired and wireless doorbell, thanks to a market-leading 5-year battery life, 100 m audible range and 450-ft (137 m) wireless range. Featuring high-quality sound, doorbell volume is adjustable up to 90 dB. If the chime can't be heard, halo and LED light notifications pull double duty, or give the system a night off with sleep and mute modes to stay disturbance-free. Choose from 11 unique tunes and 7 custom light colours. Mute and sleep modes silence notifications can be set for 3, 6, 9 or 12 hours, or permanently. Connect up to 4 devices simultaneously, including additional push buttons or motion sensors. Portable option (4 C alkaline batteries sold separately) when paired with Honeywell Home wireless push buttons RPWL400W2000 and RPWL401B2000 (sold separately).