Techniques are provided that enable a wireless security system that is designed to detect and receive wireless transmissions in one protocol, to use sensor-transmitters that operate in a different protocol. The techniques involve, generally, the use of an integration device, and in some implementations, first enrolling sensor-transmitters of a first protocol into the integration device, along with device type information for the sensor-transmitters. Thereafter, during system operation, transmissions with message packets in the first message packet protocol are received by the integration device, recognized as having been previously enrolled, and a message packet in a second message packet protocol that includes device type information is then formulated and transmitted by the integration device, for receipt by a system control device for the wireless security system. In some scenarios, an enrollment process need not be done in the integration device, and the integration device is utilized in the communication process.