◎ Features ♣ Dual Cmos Microcomputer Design ♣ Touch Keys With Audio Feedback ♣ User Prompting Annunciators ♣ Displays pH And Temperature Values ♣ Auto Lock ,Endpoint Sensing And Hold ♣ Optional RS-232C Output ♣ Manual Print ♣ Programmable Print Intervals Form 10 Seconds To 20 Hours ♣ Prints Sample And Log Numbers ♣ Prints Operation Instructions ♣ Prints And Displays Real Time Calendar ♣ Prints Error Messages ♣ Audible High / Low Alarms ♣ Error Indications ♣ Optional Temp / Slope / Offset Compensated Analog Output ♣ Power Down Memory Backup