Am looking for sensitive  iron or wiring that can be placed or attached to existing iron protective grating or grills that are installed for protection against illegal entry through windows,doors and balconies...A simple wire for example that is attached to the iron grill that when tampered with or cut can sound an interior alarm to scare attempted robbers off..'Or it could be thin iron strip connected to the grill sold by length,... I also require a small alarm unit that will connect to the iron grill and/or someting that can be adapted/connected to an exsisting alam unit of any kind that is already installed.