TOOGOO(R) White Plastic Housing Wireless Triangle Motion Sensor Welcome Greeting Doorbell Product Name : Welcome Doorbell;Powered By : 3 x LR44 Battery (Not Included) Three Settings : Music / Off / Voice;Detecting Range : 3m-7m Total Size : 6.5 x 5 x 2 cm / 2.5" x 2" x 0.8" (L*W*H);External Material : Plastic Color : White;Net Weight : 40g Package Content : 1 x Welcome Doorbell