Diagnostic apparatus deployed in buildings, namely, computer controlled apparatus, for determining the range and signal strength of a Low-Power Wide-Area Network (LPWAN); computer controlled apparatus consisting of Mobile computing and operating platforms consisting of computer hardware, data transceivers, wireless networking equipment and wireless gateway equipment, for collection and management of data; computer hardware and software systems for remotely managing sensors of building conditions and building operations, gateways and central network servers via Low-Power Wide-Area Networks (LPWANs) deployed in buildings; Low-Power Wide-Area Network (LPWAN) equipment and devices, namely, building conditions sensors of conditions within and of operations being performed within a building, namely, for sensing temperature, humidity, lighting, water pressure, water supply, water leakage, noises, smoke, building environments, environmental conditions, heating, cooling and facilities of the building, radios, gateways, transceivers, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches including Ethernet switches and routers, terminators and repeaters, and remote presence management products, namely, switches, and console, alarm, sensor and power management devices, all for a Low-Power Wide-Area Network (LPWAN)