ELKM1XRF319
As a dual antenna, wireless (RF) receiver, and input expander for use with the ELK-M1 and ELK-M1EZ8 Controls, the Elk ELK-M1XRF319 receiver is compatible with wireless transmitters that operate on the 319.5MHz frequency and adhere to the Interlogix protocol. This receiver can be integrated in the same way as an M1XIN hardware zone expander, except it can handle up to 144 wireless zones (transmitter sensors or points).
The Elk M1 Wireless Receiver and Input Expander is compatible with Elks 319 Series one-way wireless