PIR Vacancy Sensors

The Echo PIR Vacancy Sensor is a ceiling mounted sensor that utilizes passive infrared (PIR) technology, providing reliable vacancy detection for lighting control. The sensor relies on local station control for manual on and provides auto off functionality upon detection of vacancy. The PIR Vacancy Sensor provides 360 degree coverage of the installed location and is available in three models:

Echo PIR Vacancy Sensor Coverage
E-VAC-SR Small room lens

450 ft2 at 8 ft (42 m2 at 2.4 m)

800 ft2 at 10 ft (74.3 m2 at 3 m)
E-VAC Standard room lens

1,800 ft2 at 8 ft (167 m2 at 2.4 m)

3,000 ft2 at 10 ft (279 m2 at 3 m)
E-VAC-HC High ceiling lens

300 ft2 at 10 ft (282 at 3 m)

7,000 ft2 at 40 ft (650 m2 at 12 m)

Reference the Unison Echo Vacancy Sensor Installation Guide for information on installing this sensor. All ETC documentation is available for free download from etcconnect.com.

Configuring the Vacancy Sensor

Use the drop down menus and keypad to set the configurable features. Additional menu options will display based on the Action selected (e.g., if the Vacancy Sensor Event Action is set to Preset Active, Preset Number and Timing (in seconds) displays for specification). The Multi Space Enable switch will display if the Vacancy Sensor Event Action is set to Preset Activate or Space Off, allowing you to choose multiple spaces to which that action will be applied.

Note:  Changes made to the PIR Vacancy Sensor configuration settings using the EchoAccess Mobile App impact the behavior of the sensor when Custom Config mode has been enabled (set to On). The Custom Config mode DIP switch is located on the circuit board (rear side), of the sensor . A sensor placed in Basic Config mode (Custom Config DIP switch set to Off) is unaffected by EchoAccess Mobile App custom configuration settings.

Note:  Changes made to the PIR Vacancy Sensor configuration settings using the EchoAccess Mobile App impact the behavior of the sensor when Custom Config mode has been enabled (set to On). The Custom Config mode DIP switch is located on the circuit board (rear side), of the sensor . A sensor placed in Basic Config mode (Custom Config DIP switch set to Off) is unaffected by EchoAccess Mobile App custom configuration settings.

  • Vacancy Timeout - use the drop down menu to set the length of time the sensor waits before triggering the next action. Options include 5 minutes, 15 minutes, 30 minutes, and Automatic.
  • Current Status (read only) - shows current status (either Vacant or Occupied) of the Space controlled by the sensor.
  • Enable Detection LEDs - use the toggle switch to enable or disable the red detection LEDs. If enabled and occupancy is detected, the detection LEDs illuminate with each detected occupancy motion.
  • Walktest Activated - use the toggle switch to enable or disable the sensor's walktest feature. When walktest is enabled, physically walking through the space confirms the functional sensor range, illuminating the PIR LED with each detected occupancy motion.
  • Vacancy Sensor Event - use the drop down menu to set the event Action that will take place when vacancy is detected.

Configuration Sharing

Five buttons are available at the bottom of the configuration screen.