Your search for the Testo 875-KIT returned the following results:
Ideal solution for automated air conditioning and ventilation applications, this pressure transmitter measures differential pressure from -100 to 100 Pa and features analog output/supply of 4 to 20 mA (4-wire, 24 V AC/DC). In addition, it ensures optimum system function, optimizes climate conditions, and saves energy.
Testo 6651 humidity/temperature transmitter for critical climate, accuracy up to ±1.7 %RH (depends on the probe), 4 to 20mA(2 wire, 24VDC) no relays or ethernet, no display, no ethernet module, no relay, 2 analog outputs.
In industrial processes or in research-based business, the Testo 6681 temperature and humidity transmitter is ideal wherever critical climatic values need to be maintained.
