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The TM150 digital thermometer is a versatile temperature measuring instrument with three remote temperature stations.
The TM250 multipurpose thermometer is designed with four remote stations. The TM250 will alternate measurement readings between all four of its remote stations in three second intervals. An optional relative humidity, dewpoint, and dry bulb probe allows the user to obtain these critical measurements without the purchase of a separate instrument. Traditional Min/Max and memory features are also included; ideal for calculating superheat. Both units are capable of measuring temperature differential between any two stations. S179: RH, dewpoint, and dry bulb probe for TM250.