PI Manufacturing SENSOR-DWOS Installation Instructions Download Page 2

(Test Mode), make sure there is no motion (no LED flashing), the

TROUBLESHOOTING` 

The Time Delay knob is default set on 15 seconds, do not adjust it until

By pushing the control panel cover, the load can be turned On/Off

detected. To verify proper operation, turn the Time Delay Knob to 15s

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WARRANTY INFORMATION

If within five(5) years from the date of purchase, this product fails due 

to a defect in material or workmanship, we will repair or exchange it, at

 its sole option free of charge. This warranty does not apply to: (a) damage 

to units caused by accident, dropping or abuse in handling, acts of God 

or any negligent use; (b) units which have been subject to un-authorized 

repair, opened, taken apart or otherwise modified; (c) unit not used in 

accordance with instruction; (d) damages exceeding the cost of the product;

 (e) finish on any portion of the product, such as surface and weathering,

 as this is considered normal wear and tear; (g) transit damage, initial

 installation costs, removal costs, or rein-installation costs.

This warranty  service is available by returning the product with proof

dealer from whom the unit  was purchased.   

 of purchase, purchase date  and a description of the problem to the 

INSTALLATION INSTRUCTIONS

Turning On the Load under Occupancy Mode 

Load to be Automatic On once occupancy detected. 

Turning On the Load under Vacancy Mode 

Manual On/Off Button has to be pushed to turn On the Load. 

Automatic Turning Off the Load

Under either mode, the Sensor keeps the Load On until no motion is 

Manual Turning Off the Load

By Manual On/Off Button, the Load can be turned Off under either OCC

 or VAC mode. Under OCC  Mode, the Load can not automatically turn

 On 5 mins after the last motion detected.

 under either OCC or VAC mode. (Illustrated as Figure 5)

detected plus the set time delay, load(s) to be Off automatically. 

For DWOS-RNL, there is night light behind the

 ---- the Night light will turn on under occupancy when load is off. 

OFF

NOTE :

 ---- The Night Light keeps on constantly;

 ---- The Night Light will not work;

OCC

VAC

Conversely, the NIGHT LIGHT will turn off when load is on.

For proper operation, the Sensor Switch has to consume power from

 Therefore, a 

Initial run

The Sensor Switch needs

During the initial

 run, the load might be turned On and Off several times.  

 initial run is finished and proper operation function confirmed.

The Load is out of control (frequently flashing)  

1. It can take up to one minute for initial run.  

2. Check the wiring connections, especially the

The Load does not turn On without LED flashing or LED flashing

1.  Push Manual On/Off Button, if the load turns On; verify that Sensitive 

Range is on high. If the Load does not turn On, go to Step 2.

2.  Check the wiring connections, especially Hot line and Neutral wiring.

The Load does not turn On while LED flashing with motion detected

1. Check to see if Ambient Light Level is enable by covering the lens 

2. Push Manual On/Off Button, if the load turns On; verify that Sensitivity

Range is on high. If the Load does not turn On, go to Step 3

3.  Check the wiring connections, especially Hot Line and  Neutral wiring.

The Load does not turn Off 

1.  There can be up to a 30 minutes time delay after the last motion 

 initial run within one minute. 

 regardless of motion

2. Check if there is any significant heat source mounted within six feet (two  

meters) that may cause false detection such as high wattage light bulb, 

portable heater and HAVC device.  

3. Check the wiring connections, especially the Neutral wiring to the 

The Load turns On while no desired 

1. Switch from OCC to VAC mode.

2. Mask the Sensor Switch’s lens to eliminate unwanted coverage area.

3. Turn the Sensitivity Level knob toward left to avoid false alert in

 smaller room and near the door way. 

Figure 5

Neutral.

Secured Neutral Wiring is required.

 Neutral Wiring.

 Fresnel Lens as follows:

 

 

OPERATION 

The sensor switch is programmed independently for either Occupancy 

Mode or Vacancy Mode as refer to the Band Switch position under the 

control panel cover. Some might call the Vacancy mode as “Manual On 

Occupancy Mode”. 

Manual On/Off Button

 hot and 

by hand. 

 Load should turn Off in 15 seconds.

sensor switch.

TROUBLESHOOTING

Under VAC Mode, the Load can turn On automatically if motion detected

 within the 1st 30 seconds.

If within two (2) years from the date of purchase, this product fails due 

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