GW90787 - Motion detector Gewiss - Free user manual and instructions
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| Brand | Gewiss |
| Model | GW90787 |
| Product Type | Motion Detector |
| Detection Principle | Passive infrared (PIR) |
| Power Supply | 230V AC, 50Hz |
| Detection Range | Up to 10 meters (adjustable) |
| Detection Angle | 180 degrees |
| Mounting Type | Wall or ceiling mount |
| Recommended Mounting Height | 2 to 4 meters |
| Time Delay Adjustment | 10 seconds to 10 minutes |
| Light Sensitivity (Lux) | Adjustable from 3 to 2000 lux |
| Twilight Switch | Built-in, adjustable |
| Max Load | 2300W resistive / 500W LED |
| Protection Rating | IP54 (dust and splash proof) |
| Dimensions | 100 × 80 × 80 mm |
| Weight | 150 g |
| Housing Material | High-quality polycarbonate |
| Colour | White |
| Operating Temperature | -20°C to +50°C |
| Connection Type | Screw terminals |
| Certifications | CE, RoHS |
| Maintenance | Clean lens with a soft, dry cloth |
| Safety Features | Double insulated housing, tamper-resistant design |
| Repairability | Replaceable sensor module and mounting bracket |
Frequently Asked Questions - GW90787 Gewiss
How do I install the Gewiss GW90787 motion detector?
Before installation, turn off the power at the circuit breaker. Mount the detector at the recommended height of 2-4 meters. Connect the wires to the screw terminals according to the wiring diagram: phase, neutral and load. Fix the housing to the wall or ceiling using the provided bracket.
How can I adjust the detection range?
The detection range can be adjusted by turning the range control knob on the sensor. Turn clockwise to increase the range up to 10 meters, or counter-clockwise to reduce it. You can also slightly tilt the sensor head to fine-tune the coverage area.
How do I set the time delay and lux threshold?
There are two adjustment knobs on the underside. The TIME knob sets how long the light stays on after detection, from 10 seconds to 10 minutes. The LUX knob controls the light sensitivity (twilight level), from 3 to 2000 lux. Set LUX to the sun symbol for daytime operation or to the moon symbol for night-only operation.
Why does the motion detector turn on the light during the day?
This usually happens when the LUX setting is too high (sun icon). Rotate the LUX knob slowly towards the moon icon until the light no longer activates in daylight. The detector should only trigger when ambient light falls below the set level.
Why does the light stay on permanently?
The detector may be in test mode or the time delay is set to maximum. First, check the TIME knob: if it's at the longest setting, the light may seem eternal. Also, ensure the sensor is not constantly triggered by heat sources, moving tree branches, or reflections. Clean the lens and adjust the sensitivity.
What should I do if the detector fails to detect movement?
Check that nothing is blocking the detection window. Verify the power supply and wiring. Adjust the range knob to increase sensitivity. Also, ensure the ambient temperature is within the operating range (-20°C to +50°C). If the problem persists, contact a qualified electrician.
How do I clean and maintain the GW90787?
Use a soft, dry cloth to wipe the housing and the sensor lens. Do not use water, solvents or abrasive cleaners, as they may damage the infrared sensor. Check the mounting bracket periodically for tightness. Disconnect power before cleaning.
What is the maximum electrical load I can connect?
The max load is 2300 W for resistive loads (e.g. incandescent bulbs) and 500 W for LED lamps. Exceeding these values can damage the internal relay. For capacitive or inductive loads, use a contactor.
Can this motion detector be installed outdoors?
Yes, the IP54 protection rating makes it suitable for outdoor use, as it is protected against dust and splashing water. However, it should not be fully exposed to heavy rain or placed directly under a downpour. Choose a sheltered location.
How do I reset the motion detector to factory settings?
There is no external reset button. To restore defaults, turn off the power for 10 seconds, then turn it back on. The detector will revert to its last stored settings. If you need a clean slate, adjust the TIME and LUX knobs manually to your desired values.
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USER MANUAL GW90787 Gewiss
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Product information
Brand : Gewiss
Model : GW90787
Category : Motion detector