... DeliveryPackaging Detail:Standard Packing BoxDelivery Detail1-3daysSpecifications1. Door Magnetic Sensor 2. Voice activated function 3. Gsm 850/900/ ... function, aslo can increase extension as magnetic sensor or vibration sensor, can be installed in home,company,shop ... standby time,simple operation, stable performance, without install, remote control etc.Selling point of product1. GSM monitor2. Voice ...