iSMA-B-4U4O-H with 4 universal inputs and 4 digital outputs

Powerful I/O module that works as a remote I/O over a serial port with open protocols, BACnet MS/TP and Modbus RTU/ASCII. A compact size and ease of installation allow the module to be fitted even into limited space installations. The module is equipped with HVAC and light applications that control the output based on the input measurement.

4 Universal Inputs
Support for over 20 types of temperature sensors and voltage, resistance, current, and dry contact measurements on each universal input.

4 Digital Outputs
Digital outputs equipped with normally open 3 A relays allow for a direct control without additional relays.

Manual Override Switches
Each output can be manually overridden using a dedicated hand operating switch.

Built-in HVAC and Light Applications
Light, cooling, and heating configurable algorithms make the module applicable as a standalone controller. 

Hardware Specification
RS485 interface
mini USB type B interface
Status LED indicators
DIN rail mounted
8 I/Os onboard

Inputs
4 Universal Inputs (UI)
Temperature input in Celcius degrees: 10K3A1, 10K4A1, Carel 10K, 20K6A1, 2.2K3A1, 3K3A1, 30K6A1, SIE1, TAC1, SAT1, Pt1000, Ni1000 0C, Ni 1000 20C, Ni1000 LG 2
Temperature input in Fahrenheit degrees: 10K Type2, 10K type3, 20K, 3K, PT 1000, Ni 1000 32F, Ni 1000 70F
Resistive input 0-1000 kΩ
Voltage input 0-10 V DC
Current input 0-20 mA
Dry contact input

Outputs
4 Digital Outputs (DO)
NO relay output
Resistive load max. 3 A @ 230 V AC / 30 V DC
Inductive load max. 75 VA @ 230 V AC / 30 W @ 30 V DC

Communication
BACnet MS/TP
Modbus RTU/ASCII
Free software iSMA Configurator
Dedicated Niagara Framework modules

Power Supply
24 V DC ± 20%
24 V AC ± 20%