Wireless Door Open Chime, Doorbell Sensor Chime- 600 Feet Range, 5 Volume Levels(Including Mute), 58 Melodies Chimes, LED Indicator for Home, Office, Shops, Classroom

Key features

• 🔔58 MELODIES & 5 VOLUME: Door alarm receiver features 58 chimes and 5 level adjustable volume(0 dB to 110 dB) to meet your needs for different occasions. LED indicators are suitable for the elderly and hearing impaired
• 🔔150M/600 FT OPEN AREA RANGE: Doorbell sensor signal can easily cross through metal doors or walls, wireless door chime ensures you will never miss a visitor, even if you are a few rooms away or on another floor
• 🔔MULTI USE: Wireless door sensor is fit for home, classroom, office, Mall and more. You can use our doorbells to train dogs, anti-thief, welcome visitors, protect the family and more
• 🔔EXPANSION SYSTEM: Each door sensor or receiver can be expandable,you can use them with additional BISTEE door sensors or doorbells. Provide you with a door entry chime/alert system
• 💌LIFETIME QUALITY SERVICE: Return policy in 30 days / 24-hour reply / 1-year warranty / replacement for any product defect and customer dissatisfaction via seller. If you have any questions, email us with your questions. The product fails, it is recommended to try to restore the initial settings of the product before re-matching the product information