Temp Source (P852), should be set to option 4 or 5 depending on the 
sensor range, set 4 for type A and 5 for type B (see above), the range is 
specified on the label of the sensor. 
This feature is available as an option only, please consult Pulsar for further 
details. 
Digital Inputs 
Where the Zenith is required to provide power for a Device Input the 
appropriate Digital Input should be wired between the 24VDC supply 
terminal and the IN terminal. (TOTAL maximum current available, for all 
seven digital inputs, from the 24VDC supply is 24mA). When Device Inputs 
are self-powered, connection of the device should be made between the 
Common terminal and the IN terminal. (Min Input voltage 4.5VDC, and 
Maximum Input voltage 30VDC with a maximum current of 3mA).