The Dynatron ThermoStim Probe is a soft-tissue mobilization tool and an optional accessory to the Solaris Plus. It features a multi-surface head with edges and corners optimizes ThermoStim transfer and tissue mobilization. The ThermoStim Probe also allows a practitioner to deliver heat or cold therapy in combination with electrical stimulation, all at the same time. This type of technology significantly reduces the time typically required to administer three separate treatments. The temperature ranges from 35 to 112 degrees Fahrenheit. Reaching your desired temperature in less than a minute! The ThermoStim Probe is designed to operate in conjunction with any of six separate Stim modalities: Premod, Interferential, Biphasic, Russian, Microcurrent, and High Volt.