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Product
Internet + Alarm Controller
SK-121P GSM calling device
  • Function Features
  • Technical Reference
  • Schematic Diagram
  • Download
1. SOS button: 
Press this button it will auto dial emergency telephone numbers immediately one by one ,will not stop until someone answer you
Short press to hear current time by voice prompt
2.Restore:5 groups emergency telephone number/8 groups white list 
3.Portable :Wear it like necklace 
use double side tape install beside bed
4.Program: Easy set up by SMS
5.Long standby time : one fully charged last 7 -14days
6.Waterproof
7.Anti-harassment function only white list number can be answer

Power supply: DC 5V
GSM module voltage: 4.0V
Standby current: ≤2mA
Call current: ≤500 mA
GSM module: Quad-band GSM850, EGSM900, DCS1800, PCS1900
Audio output power: 8Ω 1W
Backup power: DC3.6V 600mA polymer battery