You must always connect the humidity measurement current loop (HUM, terminals 5 and 6) to power the
transmitter. Connecting the temperature measurement current loop (terminals 7 and 8) is optional.
Connect the RDP100 remote display panel using terminals 1 ... 4. The HMDW110 series transmitter provides both power and data to the RDP100.
Terminals 1 ... 4 shall be used only for connecting the RDP100 (optional) when using the analog outputs. If the RDP100 is not used,
terminals 1 ... 4 must be left unconnected. Otherwise the analog outputs may output incorrect readings.
The GND input of the RDP100 must be connected only to terminal 3 of the HMDW110 transmitter.
It must not be connected to any local ground potential.
When using the RDP100 with HMDW110 series transmitters, do not connect the Extpwr jumper to
the RDP100 component board.