The Qolsys IQ4 Comes in a variety of Mhz transmitters/receivers
Panel Type | Panel Frequencies
V1 - 319.5 Mhz, Power G, Z-Wave
V2 - 433 Mhz, Power G, Z-Wave
V3 - 345 Mhz, Power G, Z-Wave
As you may have noticed, these panels all include Power G, allowing them to use PowerG sensors. These sensors have one of the best signal strengths from our experience and are a great inclusion in the IQ4 Panel.
All the panels also use Z-Wave and allow the IQ4 Panel to communicate with Z-wave devices which are typically smart home devices that allow for automation.
The Mhz represented on the panel is understood as one of its communication paths ( along with PowerG) and allows it to communicate with other devices (Typically sensors and secondary panels) on the same communication path (as long as it is compatible with the IQ4 Panel).