A new IQ5 wireless system for a two-level home with a basement, three entry doors, one upstairs stairway and two bathrooms is estimated at $2,273 installed, with monitoring starting at $40.00/month. This example uses our suggested intrusion, water and freeze coverage, with no individual window contacts or monitored smoke detectors. It assumes a one-year monitoring agreement, then month-to-month. Tax, permits and freight are separate. Adjust the calculator for your home.