Defiant 750964 - User Manual

Questions and Answers

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Nicole GreenAug 9, 2025
Why do my Defiant 750964 lights stay on continuously?
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  Steven BrownAug 9, 2025
  If your Defiant Security System lights stay on continuously, it might be due to several reasons. A bulb may be too close to the motion sensor or pointed at objects causing heat interference; reposition the bulb. The motion sensor could be picking up heat from sources like air vents; try decreasing the range or repositioning the sensor. Check if the sensor is in manual mode and switch it to auto. Avoid using dimmers or timers; replace them with a standard switch. Also, ensure the fixture isn't on a circuit with motors or fluorescent bulbs; if it is, install it on a separate circuit.
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Emily OlsonAug 19, 2025
Why are my Defiant 750964 Security System lights flashing on and off?
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  christopherowensAug 19, 2025
  If your Defiant Security System lights are flashing on and off, it could be because heat or light from the bulbs is activating the motion sensor. Try repositioning the bulbs. Reflected heat from other objects might also be the cause; reposition the sensor. If the sensor is in 'TEST' mode, flashing is normal during warm-up. Light leaking through bulb reflectors can also cause this; replace the bulbs with high-quality PAR 38 bulbs. Also, if the motion sensor is in AlertFlash mode, flashing is normal; switch to Security or BulbSaver mode. Finally, ensure you are using dimmable PAR38 LED bulbs rated for outdoor, wet conditions.
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Johnny MorrisAug 29, 2025
What to do if Defiant Security System lights flash once then stay off in manual mode?
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  Steven NewmanAug 29, 2025
  If the lights of your Defiant Security System flash once and then stay off in manual mode, it's likely that the motion sensor is detecting light from the bulbs. To resolve this, reposition the bulbs to ensure the area below the motion sensor remains relatively dark.

Summary

Installation

Installing the Mounting Bracket

Steps to securely install the mounting bracket to the junction box.

Hanging the Light Fixture Temporarily

Wiring the Light Fixture

Instructions for connecting the light fixture wires to the house wiring.

Mounting the Light Fixture

Securely mount the light fixture canopy to the mounting bracket.

Operation

Adjusting the Bulb Holders

Rotating Sensor Controls Downward

Setting the Sensor for Testing

Configure the sensor to 'TEST' mode for initial setup and operation.

Adjusting the Motion Sensor Detection Zone

Perform a 'walk test' to establish and adjust the sensor's detection area.

Adjusting the RANGE Dial

Adjusting the ON-TIME Switch

Adjusting the DUALBRITE Switch

Adjusting the LAMP MODE Switch

Using Manual Mode

Troubleshooting

Light Will Not Come On

Diagnose and resolve issues when the light fixture does not turn on.

Light Comes On During the Day

Light Comes On for No Apparent Reason

Troubleshoot unexpected activation due to sensor or environmental factors.

Lights Turn Off Too Late in Dusk-to-Dawn

Lights Stay On Continuously

Resolve issues where the light fixture remains constantly illuminated.

Lights Flash On and Off

Lights Flash Once Then Stay Off in Manual Mode

Defiant 750964 Specifications

General

Power Source	Hardwired
Detection Range	180 degrees
Finish	White
Mounting Type	Wall Mount
Wireless	No
Voltage	120V
Sensor Type	Passive Infrared (PIR)
Detection Distance	70 feet
Weather Resistance	Weatherproof
Type	Motion Activated Outdoor Light