Overview

Occupancy sensing provides automatic on/off control so that lights are not being used when the room is unoccupied. Occupancy sensors pick up movement or sounds by occupants when the space is in use and turn the lights on. When the space is unoccupied, they turn the lights off.

In rooms where the lights are frequently left on, or where rooms are left unoccupied for large periods during the day or night, an occupancy sensor can cut lighting costs by as much as 50%. For occupancy sensors, two technologies dominate: infrared and ultrasonic.

.... CM-9-R Data Sheet

.... CM-9-PDT Data Sheet

.... WV-16-R Data Sheet

.... WV-PDT Data Sheet

.... HW-13-R Data Sheet

What Everyone's Doing Wrong > Stand Alone Occupancy Sensing

Overview

In the Stand-Alone approach, lights are switched off when nobody's home.

Component Types

• Sensing head and power pack
  or
• Wall switch replacement

Available sensing technologies

• Infrared (IR)
• Ultrasonic (US) or Microphonic (MS)
• Dual (US & IR)

Benefits

• Saves Some Energy
• Broad application

Drawbacks

• Lacks verification of control
  • No feedback from zone
  • No alarming or trending of actual performance
• Difficult to Maintain
  • Devices not centralized
  • Adjustment and recalibrating performed at the individual device level
• No customization of control sequence
  • Enable after normal business hours
  • Drive occupied mode for HVAC functions

A Superior Approach > Standard Integrated Sensing & Control

Overview

Like the Stand-Alone approach, lights are switched off when nobody's home but resolves most of the drawbacks to stand-alone occupancy sensing.

Component Types

• Sensing head
  and
• Centralized relay

Available sensing technologies

• Infrared (IR)
• Ultrasonic (US) or Microphonic (MS)
• Dual (US & IR)

Benefits

• Optimal energy savings
• Verification of control
• Centralized adjustment
• Customizable control
• Occupancy status shared with Building Automation System for alarming or trending of actual performance
• Drive occupied mode for HVAC functions

Drawbacks

• Requires a Building Automation System's presence
• Requires home run wiring to relay / relay panel

Advanced Integrated Sensing & Control > The Best Available Solution

Overview

Similar to the the Standard Integrated Sensing & Control approach, Advanced Integrated Sensing & Control leverages distributed addressable input modules on a digital daisy-chain network to eliminate the requirement for home runs to the relay or relay panel.

Component Types

• Sensing head
  ...and
• Centralized relay
  ...and
• Digi-Touch Input Module (DDN-IM)

Available sensing technologies

• Infrared (IR)
• Ultrasonic (US) or Microphonic (MS)
• Dual (US & IR)

Benefits

• Optimal energy savings
• Verification of control
• Centralized adjustment
• Most flexible control option as zones are digitally addressed and sharable across multiple field devices (switches & occupancy sensors) and relays
• Occupancy status shared with Building Automation System for alarming or trending of actual performance
• Drive occupied mode for HVAC functions
• No Home Runs back to the relay / relay panel

Drawbacks

• Requires a Building Automation Integration