iSMA Expansion I/O Modules
Modern buildings are living, breathing entities. In order to perform at their highest level, to achieve maximum efficiency and comfort, building management systems (BMS) are used. The BMS has a brain but a brain without a body isn’t very useful. The body of the BMS are field controllers, sensors,
meters, valves, dampers, VFDs, relays, and actuators.
iSMA Controlli is a name you’ll find in most of our control installations. iSMA I/O module are powerful, purpose-built input output modules with a full range of input and outputs, and various communications methods. These I/O modules allow BMS to translate sensor data through the conversion of analog
values into the digital world.

BMS systems need to differentiate between Analog and Digital Signals. Most devices are controlled using a 0-10 V analog signal, which allows them to operate within a range of 0 to 100%. For example, in an inverter, this signal controls the motor speed from 0% to 100%. In the case of a three-way valve used for mixing hot and cold water, the signal adjusts the valve’s position proportionally.
On the other hand, Digital signals are binary, with two distinct states: ON/OFF, TRUE/FALSE, or 1/0. Digital signals are commonly used to turn devices on or off, such as activating a light, controlling a fan’s operation, or enabling and disabling a cooler or heater.
iSMA I/O modules are also available as BACnet RS485 devices or with the updated BACnet IP (ethernet) protocol.

BMS needs to be flexible in terms of scalability and the possibility of implementing changes. That means open protocols, a full range of input and outputs, and various communication methods. That is why 18 types of iSMA I/O Modules can be found in iSMA portfolio, with support for all of the types of Input and Output used in the building:
- Universal Inputs
- Digital Inputs
- Analog Outputs
- Digital Outputs
- TRIAC Outputs
The Genesis Building Controls team is excited to continue to use world-class iSMA Controlli products as part of our customized Building Management Solutions.
Contact Genesis today to learn how iSMA I/O modules can help your building operate at its highest efficiency.