Two Modes: There are two modes of A, B.A mode is full loop playback; B mode is single mode. Press the button to switch between A and B mode.Builtin power amplifier, speaker power is up to 1W/8Ω, adjustable in twolevel volume,the sound is , more in line with your needs.
Power Supply: Entrance doorbell is powered by 3xAAA battery (not Included) or USB cable power supply,which can bring you more convenience.
Application: Entrance doorbell supports external memory card (not included) or builtin FLASH playback, more convenient.It has wide range of applications such as indoor holiday decoration, shop,which can install in the front door, window frame, driveway and other places you like.
Quality: The manufacturing and production of the products follow strict product quality control. The product performance is stable and the quality is You can use it for a long time with confidence.
Parameter: Entrance doorbell size is about 9 x 6 x 2.5cm/3.5 x 2.4 x 1in,induction distance3cm,detection angle is arc 120°(ceiling type) and the memory capacity is 4M bytes.