watch pager for service person

watch pager for service person ,MMcall wireless alarm homecare system includes two parts: alarm transmitter and watch pager receiver.   It is suitable for each family, villa, resthome , office,and some small site place etc.       How the system works:   The alarm transmitter is for the aged, disabled to use, while the watch pager receiver is for the carer or family member etc. When the aged needs help, he/she just need press the button, then the person with pager will come and attend in time.  It also could be used in the office for the manager call the staff. Office calling system.     MMC-N818 is updated from MMCN808, which could receive the signal from the call button directly without the paging host. it is rechargeable. Mainly used in the small to middle size service site.      Screen: Blue OLED
  Resolution: 128*64
  Message display: 3 line* 16 digits or letters
  Button quantity: 5
  Call Button capacity: 80
  Receiving frequency: 433.5Mhz
  Code system: MMCall special calling code
  Power supply: 3.7V Lithium battery
  Charging method: Micro USB port
  Battery capacity: 240mAh
  Standby power: 1mA
  Standby time: 10 days
  Sensitivity: -100dBm
  Queuing quantity: 15 (5 screens) 
  Self -definition deletion key No. Range: 1-5
  Auto display-off time: 0-99 seconds,  0 means no auto display-off
  Alert mode: vibration
  Alert time: 1-99 seconds, 0 means no vibration
  Temperature: 0°C-50°C    It works this way :