The B1 Thermostat allows precise control of any heat source up to 600w by using advanced microprocessor technology. The B1 is a dimming thermostat that gradually varies the power supplied to the heat source for a smooth change in temperature inside the vivarium. A recessed temperature control adjuster is used to prevent accidental temperature changes if the unit were to be knocked which would be easily done if the dial protruded from the casing. A yellow LED provides real time feedback as to how much power isbeing supplied to the heater. Long cable lengths ensure the unit can be fitted easily into most vivarium setups.