Transmitter Board - HMD60 - HMD65

1

RS-485 termination (120 Ω resistor) ON/OFF switch.

2

RS-485 (Modbus/BACnet) screw terminals.

3

Power supply input (15 … 35 VDC or 16 … 24 VAC) screw terminals.

4

Service port for MI70 handheld indicator and Insight PC software cable connection.

5

DIP switches for setting the HMD65 Modbus RTU or BACnet MS/TP MAC address.

6

DIP switches for selecting Modbus/BACnet communication bit rate and parity (Modbus only).

7

DIP switches for humidity output parameter selection.

8

DIP switch for selecting either Modbus or BACnet mode.

9

Trimmer for humidity measurement adjustment.

10

Screw terminals for humidity measurement output.

11

Screw terminals for temperature measurement output.

12

Trimmer for temperature measurement adjustment.

13

Indicator LEDs: flash when there is RS-485 transmit (TX) or receive (RX) activity.