Item Type: Wireless Caregiver Pager_x000D_ Material: ABS_x000D_ Wireless Reception Distance: Approx. 330m/1082.7ft (Open Area)_x000D_ Wireless Frequency: 433MHZ_x000D_ Mode: 2 For 1_x000D_ Remote Control Built In Battery: 1 x 23A 60mAh Alkaline Battery_x000D_ Voltage: 100-240V1APPLICABLE SCENARIOS: Wireless caregiver pager can be used in scenarios such as elderly pager, wireless doorbell, greeter, and one touch call for hospital patients. 238 MUSIC SONGS: Caregiver call button has 38 music songs to choose from, 4 levels of volume adjustment, and the transmitter and receiver can be paired at will. 3ULTRA LONG RANGE TRANSMISSION: Caregiver pager has ultra long range transmission, 330m of open space reception, 50m/164.0ft through the wall 1?3 floors are ringing. 4HIGH PENETRATION POWER: Alert button gives caregivers and residents freedom while ensuring that help is available at the push of a button and penetrates well. 5PLUG AND PLAY: Elderly monitoring call button is plug and play, easy to use by plugging the receiver into an electrical outlet, very convenient to use. 2 x Host 1 x Remote Control 1 x Instruction Manual