Receiver:easily plug into a standard electrical outlet (Please DO NOT plug receiver into UPS units); Transmitter:Powered by 12V A23 Alkaline battery(Battery Not Included); Receiver size: 80*80*29MM;Transmitter size:41*71*18mm
Made of high-precision electronic components,combined with unique long distance transmission technology, operates at a highest distance up to 1000ft/300M(in an open air,no obstacles)
4 level volume adjustable with 52 charming melodies available, you will never be bored with terrible doorbell ringing again , both perfect to look after the young and the old. This can be specially used as professional pager for the old. When an old man meets with an emergency,he just needs to slightly press the transmitter button, his family can receive his signal for help
Flexible design according to your actual needs. You can choose the quantity of transmitter and receiver as you like, which can be freely matched with each other. No matter in the bedroom or on the balcony, you will never miss any visits from outside of your door
Adopt enclosed waterproof design, can be used in multi environments, even in bad rainy days; Six shining colors for your choice, not only stylish,modern,charming,but also practical and convenient. With this doorbell, your life will be much more colorful!