1. Wireless doorbell with 52 Melodies & 4-Level Volume Mode perfect for classroom, small 2-story homes or large apartments.
2. Easy install plug and play. can pair more transmitter and receiver to meet your need.
3. 52 Melodies & 4-Level Volume Mode ringtones such as classic “ding dongs”, pleasant melodies and more. 4-level of volume range from 25 db to 85 db.
4. Ultra-low power consumption design, sustainable use of Energy. Functional between -30 °C to 70 °C.
5. FCC, CE, ROSH certified.
6. Memory Function – Preserves your last set melody and volume level after receiver power outage, do not need to reset to your previous settings.