does heater and chiller, has an alarm, digital temp. $75 model PHC300
www.sealifesupply.com/MEDUSA%20PDF'S/phc-300%20manual.pdf
Display Type 3-digit .3 inch high red LED
Display Resolution ±0.1 degree F/C
Display Units Degrees F or degrees C, selectable
Temperature Range 32F-90F or 0C-32C
Control Adjustable set point .1 to 1.0ºC (.1 to 1.8ºF)
Alarms ±2.0 degrees C or 3.6ºF of set point deviation to activate audible alarm
Sensor Type Semiconductor type on 6 ft. cord. Cord extendable.
Outputs Chiller 1/2hp Heater 1,200 watts
Power 115 volts/60 hertz , 12 amps maximum (not available in 220 volts)
Line Cord 8 feet in length with grounded plug