XUEMEI [Convenient and reliable] It is very suitable for the elderly, children, the disabled, pregnant women or patients who need to Quick help, because the caregiver's nanny cannot always accompany the patient or the disabled, just press the phone button without shouting You can get timely and thoughtful care.It can also be used as a doorbell. [Long distance] Open areas are up to 400 meters (walls and other objects will reduce the distance) and 16-bit encoding is used for eliminate interference from other devices, providing the performance required to work almost anywhere in the house. [Easy to place] The waterproof transmitter comes with a lanyard, which can be worn as a pendant or placed on the head of the bed. The receiver can be hung on the wall with a cord, placed on the table or in the caregiver's pocket. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 322 hours Hope you have a pleasant shopping experience!