12V Wired Door Bell Home Doorbell 90dB No Installation Required for Recessed Speaker Access Control System Ideal for Apartment and Secure Residence

This wired doorbell adopts premium ABS shell material, flame retardant and anti-flame, you can use it with confidence. This doorbell could be wall adhesive glue or double-sided adhesive, very easy to install. There is no need to replace or add a battery to this door chime, because it uses access control power, environmentally friendly, convenient and saving money. This doorbell has a built-in 90dB speaker, which can produce powerful sound, you will not miss the ringtone. This external wired door bell could be used for security access control. It is robust and for long service life.