The vast majority of commercial buildings today include direct digital control (DDC) systems. These systems are also known by other names, such as facility management systems (FMS) and building ...

Q. I installed a dimmer switch in my dining room and now the chandelier only works half the time. There are two switches in the room that control the light. They worked fine before I started the job.

The new FLIR DM284 multimeter combines an 18-function industrial, True RMS digital multimeter with FLIR’s infrared guided measurement technology (IGM), which quickly steers the user to the precise ...

What if a variable-frequency drive (VFD) on a critical system has a fault indication, the “error” LED on a DC power supply has turned on, or a conveyor belt has started behaving erratically — most ...