The Ohaus 30500590 is a temperature probe compatible with the following models: Hotplate e-G52HP07C 120V AM, Hotplate e-G52HP07C 120V AM -K1, Hotplate-Stirrer e-G31HS04C 120V AM, Hotplate-Stirrer e-G31HS07C 120V AM, Hotplate-Stirrer e-G31HSRDS 120V AM, Hotplate-Stirrer e-G52HS07C 120V AM, Hotplate-Stirrer e-G52HS07C 120V AM -K1, Hotplate-Stirrer e-G52HS10C 120V AM, Hotplate-Stirrer e-G52HS10C 120V AM -K1, Hotplate-Stirrer e-G52HSRDA 120V AM, Hotplate-Stirrer e-G52HSRDA 120V AM -K1, Hotplate-Stirrer e-G71HS07C 120V US, Hotplate-Stirrer e-G71HS10C 120V US, and Hotplate-Stirrer e-G71HSRDM 120V US.