Feature:1. Quick Calling: When there is emergency, just push the call button, and the alert message will immediately send to the receiver.2. Stable Signal: The working range can get up to 1000 meters in an open area, making sure that you will never loss a call in night.3. Alerting Mode: Has 3 kinds of alarming modes, flashing and vibration, flashing and buzzer, flashing and vibration and buzzer.4. Extensive Use: Can be widely applied in home, nursing home, hospital and so on, suits perfectly for the elderly, patient, etc.5. Easy Carrying: Comes with a light weight and a compact size as well, ideal for both indoor and outdoor, safeguarding the safety.Specification:Item Type: Caregiver PagerWatch Receiver Parameter:Operating Frequency 433.92MHzCharging Voltage: DC5VWorking Voltage: DC3.7VLithium Battery Model: 602030Battery Capacity: 300mAh, included. Working Current: 10020mA in vibration and buzzer mode, 7510mA in vibration mode. Standby Current: 105mAReceive Sensitivity: -1072dBmDecoding: Learning CodingWaterproof Grade: IPX7Working Temperature: -20~ 60Button Launcher Parameter:Operating Frequency 433.92MHzMaterial: ABSBattery Type: 1 x 23A12V battery. Battery Capacity: 80mAh, included. Emission Current: 10mA3mAStandby Current: <1uAOpen Distance: Approx. >1000m / 3280.84ftKeystrokes: 1000,000 timesWaterproof Grade: IPX4Working Temperature: -20 ~ 55Single Key: Call.Package List:1 x Receiver1 x Button1 x Charging Cable1 x User Manual