Boost safety and gain centralized control of building electrical systems by deploying smoke and heat detector, smart outlet, and LED lighting dimmer solutions from Littelfuse. We make sensors for fire detection, relays for alarms, and Type 1 and Type 2 SPDs to protect systems from lightning strikes. We also produce parts for AFCI, GFCI, and RCD outlets to prevent arcs, shocks, and current surges.

Leading OEMs rely on Littelfuse for critical electronic components of HVAC equipment. We engineer the broadest portfolio of devices to protect circuits from damaging electrical faults, to control loads and enhance system performance, and to sense temperature accurately. Our solutions work in commercial and residential heat pumps, water heaters, smart thermostats, and rooftop and split systems.

People, air, electricity, heating gas, and water move through buildings. Littelfuse engineers work to ensure all do so efficiently and safely. Our smart metering solutions allow designers to deliver IoT capabilities and enable users to make the most of natural resources and budgets. Our elevator and escalator solutions ensure reliability, protect riders, and facilitate emergency response.

From lightning protection for automatic gates to ESD suppressors for smart locks and solid state relays for security cameras, Littelfuse provides the electronics solutions required for building security and access control. We also make several magnetic sensors for window security, as well as passive infrared (PIR) sensors for presence and entrance sensing.