This Modbus Wall controller includes an Exhaust Fan Control unit

I/O list
5  Dry contacts input for motion sensors or contact switch
5  Dry contacts Relay output
1  Integrated temperature sensor
1  Input for outside air sensor temperature

LCD screen with lockout
on screen Programmable time delay for each in/out Circuit
RS485 modbus RTU interface for BMS integration

Outside air temperature can be used to determine permission of the relays  when triggered.
Perfect to prevent air exchanger to work in very hot or very cold weather.

Inside air temperature sensor can be used to to evacuate when room is too hot,  even if motion sensor is not triggered.

Programmable delay function to run from 5 to 45 minutes per hours.
Temperature in deg C or Deg F


SPECS
24VAC or 12VDC operation  100ma
Sensors input 10K Type III 
all relays are  2A @ 24VDC, 0.5A @ 125VAC  ( used with power relay.  not for direct load)
UL File No.: E43149CSA File No.: LR26550

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