Johnson Controls pneumatic signal transmitter with a temperature range of 0-100°F, a copper bulb, and a 4' copper capillary. This transmitter measures temperature and converts the measurement to an air pressure signal that is transmitted to a control. This transmitter features ball type control port for increased accuracy, a lever with reinforced edges for increased linearity, a bimetal element to compensate for ambient temperature effect, and an integral hypodermic needle test point. T-5210 pneumatic temperature transmitters are designed to measure a temperature and convert this measurement to an air pressure signal that is transmitted to a pneumatic receiver, controller, or receiver-indicator. Pneumatic feedback is incorporated into the transmitter design to provide an exact proportional relationship between the measured temperature and the transmitted signal.