Herpstat ND Digital Propotional Thermostat   Products    Environment Control       Herpstat       Herpstat ND       Herpstat II       Herpstat PRO       Herpstat Humidity       Herpstat Accesories       Night Drop Cable       Replacement Probe       USB Data Cable   BUY DIRECT       Online Store   News       What's New?   Projects       Future Development   About Us       Company Info       Reseller Info       Terms Proportional heating constantly monitors and adjusts amount of heat necessary to maintain a target temperature (Usable range from 50°F to 140°F or 10°C to 60°C). Can also be used in non-proportional (on / off) mode. Sensor Matching allows the user to digitally calibrate the sensor output to match other equipment. Power Matching allows the user to increase / decrease the proportional power output curve to match the enclosures efficiency. Coil Warming feature for enclosures using heating coils to increase accuracy. Night Drop feature built in with real time clock. Also able to completely turn off the output during the night cycle. Cooling function allows control of basic cooling devices. High / Low temperature tracking helps monitor heating system and enclosure efficiency. Individually selectable High / Low temperature threshold alarms. Precision sensor with internal resolution of .1125 °F and is accurate to ± .9 °F Display and setting in tenths of a degree. Alarm Clock feature great for daily reminders. All settings are retained in memory even if power is lost. Power Outage detection / tracking. Temperature can be set / displayed in Fahrenheit or Celsius. Easy to read backlit LCD display. Removable sensor allows for easy replacement if necessary. Resettable fuse never requires replacement. Audible alarm system Internal error detection shuts off heat if sensor fails or is disconnected. 600 Watt rating sufficient for most incubators, rack systems, enclosures, and vivariums. 1 year limited warranty