Feature:1. 38 Melodies : The wireless call button has 38 ringtones to choose from and 4 level volume to adjust, the sound is clear and loud, and equipped with LED indicator light.2. Premium Material: Caregiver pager is made of premium ABS and silicone material, which is wear resistant, flame retardant, eco friendly and durable.3. Memory Function: Restart the device, ringtone remianed unchanged, after an unexpected power outage, emergency pager was the same setting when it restarted.4. Long Distance Transmission: The open barrier free reception distance is 350m, the indoor receiving distance is longer than 50m, ensures that the older can get help in time.5. Wide Application: This alert button can be used as the elderly call device, children call device, wake up device, nursing call device, and so on.Specification:Item Type: Caregiver PagerMaterial: ABS, silicone.Music: 38 songs (4 levels of volume adjustable)Transmission Distance: Approx. 350m/1148.29ft (barrier free), 50m/164.04ft (indoor)Transmission Frequency: 433MHzPager Size: Approx. 60x60x14mm/2.36x2.36x0.55inReceiver Size: Approx. 72x72x17mm/2.83x2.83x0.67inReceiver Plug Specifications: AC100-240VBattery: L1028 23A12V dry battery 200mAhx1 (built in)Application:Can be used as the elderly call device, children call device, wake up device, nursing call devicePackage List:1 xTransmitter2 x Receiver1 x Hand StringNote:1. Do not place the product in a corrosive, humid and high emperature environment!2. Please supply power according to the voltage used. Other voltages may cause fire and product damage.