Caution: color: we ship according to the color of the first picture, in the package: if the quantity is not stated in the description, we will ship the item according to the quantity and model number in the title. 1 Set eu plug smart door bell motion sensor wireless doorbell alert secure system alarm doorbell 38 chimes door ring receiver| doorbell white description: bright led indicators and a choice of 38 chimes allow you to customize your alerts. Features: includes wireless battery operated sensor and plug in receiver,just place the sensor at the entrance to your driveway and the receiver inside your home. It detects movements and sends a signal to the receiver from up to 328 feet 100m away. Alerts you when someone enters your driveway, walking path, doorway or business, such as visitors, vehicles, intruders, animals or kids coming or going. Advanced caution when someone or something enters before they surprise you. Use it to monitor any area inside or outside, its wireless so you can place it anywhere in the house or even take it from room to room. Specifications: working voltage of the receiver:110v-240v working voltage of the pir sensor:4.5V 3x aaa batteries, not included working range: up to 328 feet 100 meters infrared sensing range: up to 23 feet 7 meters receiver size: 3.14" L x 2.99" W x 1.29" H 80 x 76 x 33mm sensor size: 3.14" L x 2.32" W x 1.77" H 80 x 59 x 45mm packaging weight: 7.76 Ounces 0.22Kg receiver switch settings: music source: 38 different songs volume adjustment: high, middle, low receiver can be set to sound and silence sound: sound + indicator silent: indicator light package included: 1 x pir sensorr 1 x manual 1 x retail box