... .51 wireless sensors 4.LCD SMS alarm wireless GSM/Telephone auto switch Home Wireless Alarm System(LS-GSM-007) Main Features ... not working with Center Station, when the panel alarms and auto dial, the user can listen in, speak, sound siren, disarm ... remotely from user’s phone.7. 6 groups timed auto arm/disarm, Away/Stay arm optional8. Every zone can be ...