This range incorporates the new digital Series 200 Advanced Protocol for greater control, configurability and device management, whilst enabling optimisation as per the location and use of the building. The 52051E and 52051HTE fixed temperature analogue addressable sensors incorporate low-mass thermistors and microprocessor technology for fast response and linear temperature sensing. The 52051RE uses the same thermistor and microprocessor technology to provide an alarm when the rate of rise in temperature exceeds 10°C/minute or if the temperature exceeds a threshold of 58°C.