IKA RCT Basic safety control hotplate/ stirrer digital temperature dry block

used working IKA RCT Basic safety control digital hotplate/ stirrer. digital display shows temperature and rotation speed and two metal blocks to hold up to 34 of 15ml tubes and up to 17 of 50 ml tubes. Hot/stirring plate diameter 5.5 inches. Temperature variable ambient to 310 oC. rotation speed variable 0-1500 rpm. 115v. heats up pretty fast. the speed regulator works fine. lot ulstnewleft