ACTIVE-ATOM SINGLE INPUT ZONE GSM COMMUNICATOR-ANDROID APP Single Zone Zone activation /deactivation can be done through SMS/ANDROID application Both Zone Open and close alert available Option to Receive Only Zone open alert or Zone close alert or Both available Instant SMS/Call alert For zone open/close Option to Receive only SMS Alert or Call Alert or Both available Memory available to store 4 phone numbers, 1 Admin Number Device can be controlled through android application Editable 15 Bit SMS Alert Message Compact Design Extremely user friendly Having network led to know signal strength Having status led to display board is in ideal or doing some operation