Feature: 1. One Button Alarm: Call button labor saving design, one button emergency alarm, wear on the body can be easily pressed, in case of emergency, just press the button, alarm information can be sent to the host 2. Easy to Carry: The wireless pager is small and easy to carry, with a free lanyard, the elderly and patients can carry it with it 3. 4 Gear Volume: The sound quality is crisp and beautiful, 4 levels of volume is adjustable, 36 music melody, to meet the needs of different ringtones 4. Transmission Distance: The reception distance is about 200m in complete openness without obstacles, the actual reception signal varies depending on the environment, depending on the obstacles 5. Widely Used: Can be used as a household doorbell, connected indoor, outdoor. The receiver is plugged in and installed indoors, and the transmitter is installed at the outdoor door. When the guests come and press it, we can receive the bell Specification: Item Type: Wireless Caregiver Pager Material: ABS Weight: Approx. 200g / 7.1oz Transmitter Built in Battery: 1 23A 12V Battery 60mah (Included) Features: 36 Songs 4 Gear Volume Levels Receiver Size: Approx. 20x62x62mm / 0.8x2.4x2.4in Transmitter Size: Approx. 20x42x78mm / 0.8x1.7x3.1in. Package List: 1 x Slogan1 x Lanyard2 x Receiver1 x Screwdriver1 x Glue1 x Transmitter1 x Transmitter Base2 x Screws2 x Expansion Tube