1. Quick Calling: When there is emergency, just push the call button, and the alert message 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 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, perfect for both indoor and outdoor, safeguarding the safety.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 433.92MHzBattery Type: 1 x 23A12V battery.Battery Capacity: 80mAh, included.Emission Current: 10mA3mAStandby Current: Less than 1uAOpen Distance: . 1000m / 3280.84ftKeystrokes: 1000,000 timesWaterproof Grade: IPX4Working Temperature: -20 ~ 55Single Key: CallNote: Due to different production batches, there may be slight differences in products.Colour:BlackMaterial:ABSPackage Contents:1 x Receiver1 x Button1 x Charging CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.