Equipped with 12 x 12 in. milled-flat cast aluminum heater top for even heating across surface, EchoTherm™ Model HP61A features temperature range of ambient to 450°C controlled to ±1°C of target. Accuracy is 1% of reading using platinum RTD sensor in heater top. Programmed through front panel membrane switch and LCD, unit stores 10 programs in memory. Hot plate has countdown timer with alarm, user settable auto-off, and RS232 I/O port for computer control or data logging.