【Waterproof & Dustproof Emergency Button】The emergency call button features a screwless chuck design, making it waterproof and dustproof without the need for a rubber ring, ensuring durability and reliability. 【EU Plug Receiver with Wide Voltage Support】The receiver plugs into an AC socket with an EU plug and supports a voltage range of 110-240V, making it ideal for various household power configurations. 【Long Battery Life for SOS Button】The SOS call button operates on a long-lasting CR2032 battery, ensuring consistent performance for emergency situations without frequent replacements. 【Up to 80 Meter Wireless Range】With an open-area receiving distance of up to 80 meters, the SOS button ensures reliable communication, even from a distance, to help in emergencies. 【Simple & Easy to Use】Plug the receiver into an outlet and simply press the panic button to request help, perfect for seniors, disabled, or bedridden individuals needing assistance. 【Versatile & Convenient Call Button】The call button comes with a lanyard, allowing it to be worn around the neck or attached to a walker, chair, or bedside, making it accessible at all times. Specifications: Model: C20 Call button size: 60x34x11.5mm Receiver size: 90x56x20mm Call button battery: 1 x CR2032 button cell (included) Working distance: 80m (open space) Note: The transmitter shown in the picture is for rendering only (not included). The wireless signal can be affected by obstacles. The more obstacles, the more serious the loss of signal.