A sensor device comprises a radio circuit; air-quality detectors; a microcontroller; a building management system (BMS) integration module, the BMS integration module including a transceiver distinct from the radio circuit and a co processor distinct from the microcontroller; and a memory that configures the sensor device to: transmit, during a first time period, a wake-up signal, wherein the wake-up signal includes at least a packet number; send, during a second time period, an acknowledgment (ACK) signal, wherein the ACK signal is sent in reference to a synchronized time slot and a packet number; transmit, during a third time period, at least sensor reading data of least one air quality detector, wherein the sensor reading data is encrypted using at least an encryption key stored in the memory; receive, during a fourth time period, a sleep signal; and enter into a sleep mode upon receipt of the sleep signal.