Main functions: 1) RJ11 or USB plug spring cable, compatible with normal sensors 2) It has a signal detection switch. 3) It offers a MINI USB charging port. 4) Rechargeable lithium battery built inside. 5) Standby time of 7 days or 1 year for your options. 6) LED light indication for different alarm position 7) It has power switch to turn off power when put in warehouse. 8) It has low battery indication and external power connection/disconnection indication 9) It has password modification function for IR remote key, and RESET button. 10) Alarm volume is above 95db±5%.. 11) It could use with TIMING clamp to secure mobile phones/tablets better. 12) It is compatible with DP1128 wall display holder, DA1880, DA1852, DA1838 and DA1879 desktop display holder. 13) It offers a 3M adhesive tape. Parameters; 1) product size: 50X32X18mm. 2) Alarm volume: 95db. 3) Standby time: 7 days or 1 year for options. 4) Charging output: MINI USB. 5) External power and signal input port: RJ11 or USB. 6) Length of spring cable: 17cm with 1.5m extension maximum. 7) Maximum charging current: 2A.