What is the Output of a STR300
Site using STR series Sensor
The HVAC European+Sensors+Catalogue.pdf on the Extranet, the STR300 Series with an Output of 0-10V.
The datasheet (if you navigate to Current Products > European Field Devices > Sensors) on page one shows output is actually 4-20ma.
The STR300 has an Output signal of 4 to 20 mA
The STR300 is an electronic living space transmitter that converts a measured temperature into an electric current signal. The transmitter is delivered as a complete unit, comprising a Pt100 classB sensing element and an amplifier mounted in a housing. STR300 is intended either for surface mounting on a wall or installation in a standard switch box in dry, dust free rooms.